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Bug#310048: kicker: sometimes eats 100% CPU after logout from KDE

Package: kicker
Version: 4:3.3.2-1
Severity: important

Sometimes after I log out from KDE, the kicker remains hanging and
starts eating 100% CPU. It doesn't die off even when I log in again,
so I have to kill it with SIGKILL. This happens or not happens without
obvious reasons, and the probability of hanging seems to be about 50%.

I've tried attaching to the hanging kicker process to find out what's
it busy with. Using strace has shown that it's not doing any syscalls.
Here is what I found out with gdb:

0x4b7b8332 in mallopt () from /lib/tls/i686/cmov/libc.so.6
(gdb) up
#1  0x4b7b817e in mallopt () from /lib/tls/i686/cmov/libc.so.6
(gdb) up
#2  0x4b7b6ffb in free () from /lib/tls/i686/cmov/libc.so.6
(gdb) up
#3  0x45c7eed8 in QImage::freeBits () from /usr/lib/libqt-mt.so.3
(gdb) up
#4  0x45c7e6aa in QImage::reset () from /usr/lib/libqt-mt.so.3
(gdb) up
#5  0x45c7dfeb in QImage::~QImage () from /usr/lib/libqt-mt.so.3
(gdb) up
#6  0xb7b42da2 in TaskBarContainer::sizeHint () from /usr/lib/libtaskbar.so.1
(gdb) up
#7  0x4b7701d2 in exit () from /lib/tls/i686/cmov/libc.so.6
(gdb) up
#8  0x463b3203 in _kde_IceDefaultIOErrorHandler () from /usr/lib/libDCOP.so.4
(gdb) up
#9  0x463b4822 in _kde_IceWrite () from /usr/lib/libDCOP.so.4
(gdb) up
#10 0x463b4355 in KDE_IceFlush () from /usr/lib/libDCOP.so.4
(gdb) up
#11 0x463ab35c in DCOPClient::callInternal () from /usr/lib/libDCOP.so.4
(gdb) up
#12 0x463aaafc in DCOPClient::callInternal () from /usr/lib/libDCOP.so.4
(gdb) up
#13 0x463aa5c5 in DCOPClient::call () from /usr/lib/libDCOP.so.4
(gdb) up
#14 0x463aa3ea in DCOPClient::call () from /usr/lib/libDCOP.so.4
(gdb) up
#15 0x463ac222 in DCOPClient::disconnectDCOPSignal () from /usr/lib/libDCOP.so.4
(gdb) up
#16 0x463a008e in DCOPObject::~DCOPObject () from /usr/lib/libDCOP.so.4
(gdb) up
#17 0xb79333a6 in KMFactory::~KMFactory () from /usr/lib/libkdeprint.so.4
(gdb) up
#18 0xb793673f in KStaticDeleter<KMFactory>::destructObject () from /usr/lib/libkdeprint.so.4
(gdb) up
#19 0x46273825 in KGlobal::deleteStaticDeleters () from /usr/lib/libkdecore.so.4
(gdb) up
#20 0x461e13ac in KApplication::~KApplication () from /usr/lib/libkdecore.so.4
(gdb) up
#21 0x46282157 in KUniqueApplication::~KUniqueApplication () from /usr/lib/libkdecore.so.4
(gdb) up
#22 0x46b513e8 in Kicker::~Kicker () from /usr/lib/libkdeinit_kicker.so
(gdb) up
#23 0x46b4f441 in kdemain () from /usr/lib/libkdeinit_kicker.so
(gdb) up
#24 0xb7ff88a6 in kdeinitmain () from /usr/lib/kde3/kicker.so
(gdb) up
#25 0x0804cd30 in ?? ()

If you need more debugging information of some kind, or information
about my system configuration, just write what info you need, I'll try
to collect it.

-- System Information:
Debian Release: 3.1
  APT prefers testing
  APT policy: (900, 'testing'), (800, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.11-1-686
Locale: LANG=ru_RU.KOI8-R, LC_CTYPE=ru_RU.KOI8-R (charmap=KOI8-R)

Versions of packages kicker depends on:
ii  kdebase-data              4:3.3.2-1      KDE Base (shared data)
ii  kdelibs4                  4:3.3.2-5      KDE core libraries
ii  libart-2.0-2              2.3.17-1       Library of functions for 2D graphi
ii  libc6                     2.3.2.ds1-21   GNU C Library: Shared libraries an
ii  libfam0c102               2.7.0-6        client library to control the FAM 
ii  libgcc1                   1:3.4.3-12     GCC support library
ii  libice6                   6.8.2-5.1      Inter-Client Exchange library
ii  libidn11                  0.5.13-1.0     GNU libidn library, implementation
ii  libkonq4                  4:3.3.2-1      Core libraries for KDE's file mana
ii  libpng12-0                1.2.8rel-1     PNG library - runtime
ii  libqt3c102-mt             3:3.3.4-3      Qt GUI Library (Threaded runtime v
ii  libsm6                    6.8.2-5.1      X Window System Session Management
ii  libstdc++5                1:3.3.5-12     The GNU Standard C++ Library v3
ii  libx11-6                  6.8.2-5.1      X Window System protocol client li
ii  libxext6                  6.8.2-5.1      X Window System miscellaneous exte
ii  libxrender1               0.9.0-0ubuntu4 X Rendering Extension client libra
ii  libxtst6                  6.8.2-5.1      X Window System event recording an
ii  xlibs                     6.8.2-5.1      X Window System client libraries m
ii  zlib1g                    1:1.2.2-4      compression library - runtime

-- no debconf information

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