This is a simple KMail instance with two POP3 accounts - no PIM, no IMAP, no local maildir. Several times a day I find a duplicate pair of new e-mails in the message list. The first displayed has a small greenish icon, the second doesn't. This is a minor inconvenience (though annoying since it's been happening since the first version of KMail2), as I can delete either of the pair, but in the last two days the pitch has stepped up. One e-mail, the last in a newly subscribed-to mailman list, is being replicated at random intervals. So far I've deleted 50 copies. Actually, only 50 show in the trash, but I've seen at least 20 more than that in the count of new messages in the folder list. Reproducible: Sometimes $ emerge --info kmail Portage 2.2.18 (python 2.7.9-final-0, default/linux/amd64/13.0/desktop/kde, gcc-4.8.4, glibc-2.20-r2, 3.18.11-gentoo x86_64) ================================================================= System Settings ================================================================= System uname: Linux-3.18.11-gentoo-x86_64-Intel-R-_Core-TM-_i5_CPU_750_@_2.67GHz-with-gentoo-2.2 KiB Mem: 16404812 total, 7018644 free KiB Swap: 46137328 total, 46101092 free Timestamp of repository gentoo: Sun, 26 Apr 2015 02:45:01 +0000 sh bash 4.2_p53 ld GNU ld (Gentoo 2.24 p1.4) 2.24 app-shells/bash: 4.2_p53::gentoo dev-lang/perl: 5.20.2::gentoo dev-lang/python: 2.7.9-r1::gentoo, 3.3.5-r1::gentoo dev-util/cmake: 2.8.12.2-r1::gentoo dev-util/pkgconfig: 0.28-r2::gentoo sys-apps/baselayout: 2.2::gentoo sys-apps/openrc: 0.13.11::gentoo sys-apps/sandbox: 2.6-r1::gentoo sys-devel/autoconf: 2.13::gentoo, 2.69::gentoo sys-devel/automake: 1.11.6-r1::gentoo, 1.13.4::gentoo sys-devel/binutils: 2.24-r3::gentoo sys-devel/gcc: 4.8.4::gentoo sys-devel/gcc-config: 1.7.3::gentoo sys-devel/libtool: 2.4.6::gentoo sys-devel/make: 4.1-r1::gentoo sys-kernel/linux-headers: 3.18::gentoo (virtual/os-headers) sys-libs/glibc: 2.20-r2::gentoo Repositories: gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://serv.prhnet/gentoo-portage priority: -1000 ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA AdobeFlash-11.x google-chrome googleearth PUEL" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -march=native -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/bin/startx /usr/lib64/libreoffice/program/sofficerc /usr/share/applications/boincmgr-boinc.desktop /usr/share/config /usr/share/consolefonts /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/init.d /etc/pam.d /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-O2 -march=native -pipe" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="--autounmask=n --keep-going --nospinner" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs buildpkg buildsyspkg config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://mirror.bytemark.co.uk/gentoo/ http://mirror.qubenet.net/mirror/gentoo/ http://gentoo.virginmedia.com/" LANG="en_GB.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j12" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" USE="X a52 aac acl acpi alsa amd64 berkdb branding bzip2 cairo cdda cdr cli consolekit cracklib crypt cups cxx dbus declarative dri dts dvd dvdr emboss encode exif fam firefox flac gdbm gif glamor gpm gtk iconv ipv6 jpeg kde kipi lcms libnotify mad mmx mmxext mng modules mp3 mp4 mpeg multilib ncurses nls nptl ogg opengl openmp pam pango pcre pdf phonon plasma png policykit popcnt ppds qt3support qt4 readline sdl semantic-desktop session spell sse sse2 sse3 sse4_1 sse4_2 ssl ssse3 startup-notification svg tcpd tiff truetype udev udisks unicode usb vorbis wxwidgets x264 xcb xcomposite xinerama xml xv xvid zlib" ABI_X86="64" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ublox ubx" GRUB_PLATFORMS="pc" INPUT_DEVICES="evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="en_GB en" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_3" RUBY_TARGETS="ruby19 ruby20" USERLAND="GNU" VIDEO_CARDS="nouveau" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CPPFLAGS, CTARGET, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON ================================================================= Package Settings ================================================================= kde-base/kmail-4.14.3::gentoo was built with the following: USE="handbook kontact (-aqua) -debug -test" ABI_X86="64"
A big improvement has resulted from installing the whole of the Gentoo kdepim-meta package with ACCEPT_KEYWORDS="~amd64". KMail is still at the same version, but the supporting programs are newer than they were (or new to the system). Since I made this change a few days ago I've had no duplicates at all. It's difficult to know which (now superseded) program had the bug in it because I'd have to uninstall the whole of KDE-Pim and install it again a few programs at a time. I could do that if necessary. I've found it necessary for KMail to be installed after all the other PIM programs; when I do that I also get my "trash" folder renamed to "wastebin" (thank you, translation team!). For info, these are the packages that kdepim-meta pulls in: akonadiconsole, akregator, blogilo, calendarjanitor, kabcclient, kaddressbook, kalarm, kdepim-icons, kdepim-kresources, kdepim-runtime, kjots, kleopatra, kmail, knode, knotes, konsolekalendar, kontact, korganizer, ktimetracker, ktnef, kde4-l10n, kdepim-l10n. That's the order in which they appear in the ebuild. Hope that helps.
That turned out to be illusory. Before long I was getting large numbers of duplicates, sometimes just by clicking on another folder. I now think the problem is some errors in old e-mails, against which KMail-2 is not rubust, so I've moved and renamed the suspect folders and created new ones in their place. I'll see how it goes now.
That didn't work either, so I created a new user for myself and didn't import any e-mails at all. Guess what? Still getting duplicates. If there were any other acceptable e-mail client I'd switch to it, but you have me trapped.
I've belatedly discovered akonadiconsole. I used it to clear the akonadi caches of the troublesome folders, then resynchronise them. Pro tem, it seems this has done the trick: whatever rubbish has been lurking in those folders appears to have been cleared out. Now when I get a duplicate, which I still do most days, when I view one of the pair the other one disappears. It's a phantom and doesn't appear in the trash or anywhere else.
*** This bug has been marked as a duplicate of bug 283682 ***