Application that crashed: kmail
Version of the application: 1.12.2
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-14-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
Closing Kontact or Kmail, it crashes with a SIGSEGV (other components not tested separately)

 -- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
[KCrash Handler]
#6  0x00000000 in ?? ()
#7  0x018c96ce in qDeleteAll<KIO::SchedulerPrivate::ProtocolInfoDict> () at /usr/include/qt4/QtCore/qalgorithms.h:358
#8  ~SchedulerPrivate () at ../../kio/kio/scheduler.cpp:103
#9  destroy () at ../../kio/kio/scheduler.cpp:209
#10 0x017fcf6b in ~KCleanUpGlobalStatic (this=0x19ce5d4, __in_chrg=<value optimized out>) at ../../kdecore/kernel/kglobal.h:62
#11 0x0094905f in ?? () from /lib/tls/i686/cmov/libc.so.6
#12 0x009490cf in exit () from /lib/tls/i686/cmov/libc.so.6
#13 0x00930b5e in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#14 0x08049c91 in _start () at ../sysdeps/i386/elf/start.S:119

Reported using DrKonqi