hi list,
am going confused a little bit about a lot of errormessages in 
/var/log/messages.

here are some examples about, hope anyone can help or explain something, 
what's going on here.

examples :

Oct  8 04:28:00 hanna kernel: Code: 0f 0b d2 00 80 5e 23 c0 8b 57 04 8b 07 89 
f9 89 50 04 89 02
Oct  8 04:28:00 hanna kernel:  kernel BUG at page_alloc.c:210!
Oct  8 04:28:00 hanna kernel: invalid operand: 0000
Oct  8 04:28:00 hanna kernel: CPU:    0
Oct  8 04:28:00 hanna kernel: EIP:    0010:[rmqueue+149/672]    Not tainted
Oct  8 04:28:00 hanna kernel: EIP:    0010:[<c0134125>]    Not tainted
Oct  8 04:28:00 hanna kernel: EFLAGS: 00010002
Oct  8 04:28:00 hanna kernel: eax: 00010000   ebx: c025f604   ecx: 00001000   
edx: 175edaf1
Oct  8 04:28:00 hanna kernel: esi: 00000000   edi: c54da188   ebp: c025f5cc   
esp: cbaedddc
Oct  8 04:28:00 hanna kernel: ds: 0018   es: 0018   ss: 0018
Oct  8 04:28:00 hanna kernel: Process squid (pid: 2127, stackpage=cbaed000)
Oct  8 04:28:00 hanna kernel: Stack: 00001000 c54da188 00000001 00001000 
00000292 00000000 c025f5cc c025f5cc
Oct  8 04:28:00 hanna kernel:        c025f788 00000001 cbaede3c c0134564 
c01329d9 c118d0c8 00000001 cc4f34a0
Oct  8 04:28:00 hanna kernel:        c025f5cc c025f784 00000000 000001d2 
c118d0c8 cc73b0e8 00000095 cff47fac
Oct  8 04:28:00 hanna kernel: Call Trace:    [__alloc_pages+116/608] 
[lru_cache_add+89/96] [page_cache_read+109/192] 
[read_cluster_nonblocking+60/80] [filemap_nopage+257/512]
Oct  8 04:28:00 hanna kernel: Call Trace:    [<c0134564>] [<c01329d9>] 
[<c012c92d>] [<c012c9bc>] [<c012ded1>]
Oct  8 04:28:00 hanna kernel:   [do_no_page+83/432] [do_swap_page+194/272] 
[handle_mm_fault+87/192] [do_page_fault+529/1397] [zap_pte_range+271/308] 
[rm_sig_from_queue+21/32]
Oct  8 04:28:00 hanna kernel:   [<c012a223>] [<c012a072>] [<c012a3d7>] 
[<c0118551>] [<c012a92f>] [<c0124545>]
Oct  8 04:28:00 hanna kernel:   [__switch_to+187/208] [schedule+502/832] 
[sys_wait4+289/976] [sys_time+20/80] [do_page_fault+0/1397] 
[error_code+52/64]
Oct  8 04:28:00 hanna kernel:   [<c01078cb>] [<c0119016>] [<c011ec21>] 
[<c011f754>] [<c0118340>] [<c01090f4>]
Oct  8 04:28:00 hanna kernel:
Oct  8 04:28:00 hanna kernel: Code: 0f 0b d2 00 80 5e 23 c0 8b 57 04 8b 07 89 
f9 89 50 04 89 02
Oct  8 05:01:00 hanna CROND[20927]: (root) CMD (nice -n 19 run-parts 
/etc/cron.hourly)
Oct  8 05:01:00 hanna kernel:  kernel BUG at page_alloc.c:210!
Oct  8 05:01:00 hanna kernel: invalid operand: 0000
Oct  8 05:01:00 hanna kernel: CPU:    0
Oct  8 05:01:00 hanna kernel: EIP:    0010:[rmqueue+149/672]    Not tainted
Oct  8 05:01:00 hanna kernel: EIP:    0010:[<c0134125>]    Not tainted
Oct  8 05:01:00 hanna kernel: EFLAGS: 00010002
Oct  8 05:01:00 hanna kernel: eax: 00010000   ebx: c025f604   ecx: 00001000   
edx: 175edaf1
Oct  8 05:01:00 hanna kernel: esi: 00000000   edi: c54da188   ebp: c025f5cc   
esp: cbaede4c
Oct  8 05:01:00 hanna kernel: ds: 0018   es: 0018   ss: 0018
Oct  8 05:01:00 hanna kernel: Process crond (pid: 20927, stackpage=cbaed000)
Oct  8 05:01:00 hanna kernel: Stack: cbaede68 c54da188 c01d0eaa 0000a8d0 
00000292 00000000 c025f5cc c025f5cc
Oct  8 05:01:00 hanna kernel:        c025f788 00000001 cbaedeac c0134564 
00000132 c1341660 c1341708 cd22fbe0
Oct  8 05:01:00 hanna kernel:        c025f5cc c025f784 00000000 000001d2 
c012a223 4018d100 c1002ccc 00104025
Oct  8 05:01:00 hanna kernel: Call Trace:    [sock_sendmsg+90/144] 
[__alloc_pages+116/608] [do_no_page+83/432] [do_wp_page+159/576] 
[handle_mm_fault+179/192]
Oct  8 05:01:00 hanna kernel: Call Trace:    [<c01d0eaa>] [<c0134564>] 
[<c012a223>] [<c0129c1f>] [<c012a433>]
##############################################
have cutted here, because have a lot more of them.

what does this bug-messages say ?
because I have a lot of trouble with my graphic-card. It's a ATI Rage 128 and 
crashes in the form, that X* freezes, cannot do anything on the computer, no 
logout, no reboot, sometimes it is possible to do a reboot from the 
remote-machine, logged in via ssh as root. but it is not always succesfully, 
so I have to do a "hard-rest". For sure, I doesn't like it, but if nothing is 
possible to do, what other solution is possible ?

the ONLY situation, the system NOT crashes, is NOT running X-Server. but 
remote-jobs get sometimes memory-access-errors anyway.

hope, anyone can help here ?
thanks in advance and bye
hans


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