Machine instable

Bonjour,

Depuis cette semaine, j'ai une machine extr=EAmement instable.

Son comportement est identique avec une Debian testing qu'avec une Kubuntu=
=20
5.04 (livecd).

Konqueror plante r=E9guli=E8rement et me donne la trace suivante :
(no debugging symbols found)
Using host libthread_db library "/lib/tls/libthread_db.so.1".
(no debugging symbols found)
`system-supplied DSO at 0xffffe000' has disappeared; keeping its symbols.
(no debugging symbols found)
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[Thread debugging using libthread_db enabled]
[New Thread 1097101696 (LWP 2999)]
(no debugging symbols found)
(no debugging symbols found)
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[KCrash handler]
#3 0x40fd8680 in QGDict::hashKeyAscii () from /usr/lib/libqt-mt.so.3
#4 0x40fd9299 in QGDict::look_ascii () from /usr/lib/libqt-mt.so.3
#5 0x40d140b1 in QMetaObject::findSignal () from /usr/lib/libqt-mt.so.3
#6 0x40d2213b in QObject::connect () from /usr/lib/libqt-mt.so.3
#7 0x40e295bd in QPopupMenu::updateAccel () from /usr/lib/libqt-mt.so.3
#8 0x40e29228 in QPopupMenu::updateAccel () from /usr/lib/libqt-mt.so.3
#9 0x40e2133c in QMenuBar::setupAccelerators () from /usr/lib/libqt-mt.so.3
#10 0x40e1ebce in QMenuBar::show () from /usr/lib/libqt-mt.so.3
#11 0x4060b28f in KMenuBar::show () from /usr/lib/libkdeui.so.4
#12 0x4064db22 in KMainWindow::applyMainWindowSettings ()
from /usr/lib/libkdeui.so.4
#13 0x4064d5c3 in KMainWindow::applyMainWindowSettings ()
from /usr/lib/libkdeui.so.4
#14 0x4007ee50 in KonqViewManager::loadViewProfile ()
from /usr/lib/libkdeinit_konqueror.so
#15 0x4008397b in KonqMisc::createBrowserWindowFromProfile ()
from /usr/lib/libkdeinit_konqueror.so
#16 0x40068326 in kdemain () from /usr/lib/libkdeinit_konqueror.so
#17 0x0804861b in ?? ()
#18 0x00000003 in ?? ()
#19 0xbffffd64 in ?? ()
#20 0xbffffd38 in ?? ()
#21 0x413e2974 in __libc_start_main () from /lib/tls/libc.so.6
#22 0x413e2974 in __libc_start_main () from /lib/tls/libc.so.6
#23 0x08048551 in ?? ()

Ma machine frize r=E9gulierement, et je ne vois rien dans les logs......

C'est une ram d=E9fectueuse ?=20

merci

Thierry