Frequent crash in FC6

[yz wang]

my computer: P4 CPU, 3.2GHz, 2.0GB RAM, video card NVIDIA GeForce FX600, 2
harddisks, each 120GB, with winxp and fc6 respectively.
the version of fc6 is 2.6.20-1.2933.fc6xen.
it often crashed or got restarted automatically, sometimes reporting
messages as follow:

Message from syslogd at localhost at Mon Apr  2 21:23:35 2007 ...
localhost kernel: iret exception: 0000 [#1]

Message from syslogd at localhost at Mon Apr  2 21:23:35 2007 ...
localhost kernel: SMP

Message from syslogd at localhost at Mon Apr  2 21:23:35 2007 ...
localhost kernel: CPU:    0

Message from syslogd at localhost at Mon Apr  2 21:23:35 2007 ...
localhost kernel: EIP:    0000:[<00000000>]    Not tainted VLI

Message from syslogd at localhost at Mon Apr  2 21:23:35 2007 ...
localhost kernel: EFLAGS: 00000000   (2.6.20-1.2933.fc6xen #1)

Message from syslogd at localhost at Mon Apr  2 21:23:35 2007 ...
localhost kernel: EIP is at 0x0

Message from syslogd at localhost at Mon Apr  2 21:23:35 2007 ...
localhost kernel: eax: 00000000   ebx: 0811853f   ecx: 00000073   edx:
00110202

Message from syslogd at localhost at Mon Apr  2 21:23:35 2007 ...
localhost kernel: esi: b6afcb60   edi: 0000007b   ebp: 00000000   esp:
e96de01c

Message from syslogd at localhost at Mon Apr  2 21:23:35 2007 ...
localhost kernel: ds: 0000   es: 0000   ss: 0069

Message from syslogd at localhost at Mon Apr  2 21:23:35 2007 ...
localhost kernel: Process beagled-helper (pid: 4082, ti=e96dd000
task=e96c8c70 task.ti=e96dd000)

Message from syslogd at localhost at Mon Apr  2 21:23:35 2007 ...
localhost kernel: Stack: 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000

Message from syslogd at localhost at Mon Apr  2 21:23:35 2007 ...
localhost kernel:        00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000

Message from syslogd at localhost at Mon Apr  2 21:23:35 2007 ...
localhost kernel:        00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000

Message from syslogd at localhost at Mon Apr  2 21:23:35 2007 ...
localhost kernel: Call Trace:

how can I solve this problem?

Many thanks!
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