Version:            (using KDE 4.1.1)
Compiler:          gcc-4.3.1 CFLAGS="-O2 -march=prescott -pipe -fomit-frame-pointer" 
OS:                Linux
Installed from:    Gentoo Packages

The notification icons in the plasma system tray are messed up. Now, there are several other bug reports where users have complained of the fact that they have similar issues - yet I am filing a separate bug report simply because they can see the notification icons. In my case, all I see is several KDE Plasma icons overlapping each other in my system tray. Thus, there is no way to figure out to which application the icon belongs to - I have to point the mouse over the system tray to figure out which icon is located where. I have asked this question at the gentoo forums as well, and it seems no one else has similar issues - so it could be the case that my USE flags are not correct or something similar. 
For further information, I am using the kde-testing overlay to build 4.1.1 packages. 

My USE variables are as follows:

USE="X a52 aac acpi alsa -arts avahi bash-completion -bindist bluetooth \
branding bzip2 cairo cdparanoia cdr crypt css ctype cups curl curlwrappers \
cxx dbus dga directfb djvu dri dvd dvdr dts exif fam fbcon ffmpeg flac fontconfig
gd gif gimp -gnome gnutls gphoto2 gpm -gtk hal hddtemp htmlhandbook ieee1394 imagemagick ipv6 java \
java5 java6 javascript joystick jpeg jpeg2k kde libnotify mad mmx mono motif mp3 mpeg mplayer \
ncurses nls nptl nptlonly ogg opengl oss pcmcia png posix ppds qt4 qt3support quicktime \
readline real samba scanner smp sndfile spell sse sse2 sse3 startup-notification svg \
svga syslog theora threads tiff truetype type1 unicode usb v4l2 vcd \
vim-syntax vorbis wavpack win32codecs wmf xcomposite xine xinerama xml xpm xscreensaver \
xulrunner xv xvid zeroconf zlib" 

LOCAL USE VARIABLES
### Section 1: Multimedia                   
media-video/mplayer encode srt ssse3       
net-www/mplayerplug-in divx gmedia realmedia wmp firefox
media-sound/oss flash
media-sound/banshee daap

### Section 2: Applications and Office Software
app-office/openoffice gstreamer
app-text/evince dvi t1lib
gnome-extra/nautilus-sendto pidgin thunderbird
app-text/poppler cjk
>=dev-java/sun-jdk-1.6.0.06 nsplugin doc
app-admin/conky wifi
app-text/acroread nsplugin

### Section 3: Internet Applications
net-im/pidgin prediction spell
mail-client/mozilla-thunderbird ldap -crypt

### Section 4: Graphics
x11-libs/cairo glitz svg
x11-wm/compiz-fusion unsupported
media-gfx/gimp aalib

### Section 5: System
sys-apps/hal dell laptop
sys-kernel/tuxonice-sources symlink
app-portage/layman git subversion
net-dns/avahi mdnsresponder-compat

### Section 6: Libraries (qt)
x11-libs/qt:3 immqt-bc
x11-libs/qt:4 accessibility dbus gif jpeg png qt3support ssl zlib

### Section 7: KDE
kde-base/kwin captury
app-misc/strigi exiv2
kde-base/okular chm pdf
kde-base/gwenview kipi 

It would be helpful if someone could point out what is going wrong here.