Computer crashes after 2 days

[Peter Collier]

I've noticed these logwatch messages sent to root. Don't know if this
gives a clue.

--------------------- ModProbe Begin ------------------------ 

Errors running install command:
   sound_slot_1  : 7 Time(s)

 ---------------------- ModProbe End ------------------------- 


 --------------------- pam_unix Begin ------------------------ 

su:
   Sessions Opened:
      peter(uid=500) -> root: 2 Time(s)

up2date:
   Unknown Entries:
      authentication failure; logname= uid=500 euid=0 tty= ruser=peter
rhost=  user=root: 1 Time(s)


 ---------------------- pam_unix End ------------------------- 


 --------------------- Connections (secure-log) Begin
------------------------ 


Connections:
   Service sgi_fam:
      <no address>: 3 Time(s)

**Unmatched Entries**
gdm[2839]: pam_succeed_if: requirement "uid < 100" not met by user
"peter"
userhelper[5595]: pam_timestamp: timestamp file
`/var/run/sudo/peter/unknown:root' has unacceptable age (35100 seconds),
disallowing access to system-config-network for UID 500
userhelper[5595]: pam_timestamp: updated timestamp file
`/var/run/sudo/peter/unknown:root'
userhelper[5598]: running '/usr/sbin/system-config-network' with root
privileges on behalf of 'peter'
gdm[2839]: pam_succeed_if: requirement "uid < 100" not met by user
"irene"
gdm[2839]: pam_succeed_if: requirement "uid < 100" not met by user
"peter"
userhelper[7845]: pam_timestamp: timestamp file
`/var/run/sudo/peter/unknown:root' has unacceptable age (54590 seconds),
disallowing access to up2date for UID 500

 ---------------------- Connections (secure-log) End
------------------------- 

Box is a pcchips fsb266 k7 motherboard. Athlon 1700, wdig 40 gb with an
ex suse 9.0 install, maxtor 40gb with fedora 2 install ( this is the
operating system I'm active/using, the suse hard drive is only used for
a backup copy now) . 512 2100 266 ddr, ati 7800 graphics. All updates
applied.

Peter