[Bug 10805] New: Random freezes

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Ubuntu (kubuntu) | UNKNOWN

           Summary: Random freezes
           Product: Ubuntu
           Version: unspecified
          Platform: i386
        OS/Version: Linux
            Status: UNCONFIRMED
          Keywords: kubuntu
          Severity: blocker
          Priority: P2
         Component: UNKNOWN
        AssignedTo: debzilla at ubuntu.com
        ReportedBy: dudefaceguy at hotmail.com
         QAContact: kubuntu-bugs at lists.ubuntu.com


Kubuntu sometimes freezes ramdomly, with CPU usage at 100%.  I also posted bug 10597, 
stating that it also locks up specifically when I change the ACPI button settings, 
perhaps this is related. 
 
Also, I have noticed that sometimes, randomly, I will have a 100% CPU usage for a 
while when nothing processor-intensive is running.  I don't know if this is related, 
perhaps it is a separate bug.  I ran top when this occured last, and got this: 
 
top - 03:12:26 up 7 min,  2 users,  load average: 1.43, 0.75, 0.34 
Tasks: 116 total,   2 running, 114 sleeping,   0 stopped,   0 zombie 
Cpu(s):  1.3% us,  2.0% sy,  0.3% ni,  0.0% id, 96.0% wa,  0.3% hi,  0.0% si 
Mem:    515988k total,   433096k used,    82892k free,    70004k buffers 
Swap:   498004k total,        0k used,   498004k free,   128288k cached 
 
  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND 
 8564 root      26  10  1772  720  480 R  2.0  0.1   0:01.80 updatedb 
 7336 root      15   0 65100  19m 2576 S  1.3  3.8   0:23.84 Xorg 
  120 root       5 -10     0    0    0 S  0.3  0.0   0:00.17 kblockd/0 
 6903 hal       16   0  7380 5928 1596 S  0.3  1.1   0:00.69 hald 
 8635 drew      16   0  2080 1072  820 R  0.3  0.2   0:00.08 top 
    1 root      16   0  1552  508  444 S  0.0  0.1   0:00.47 init 
    2 root      34  19     0    0    0 S  0.0  0.0   0:00.00 ksoftirqd/0 
    3 root       5 -10     0    0    0 S  0.0  0.0   0:00.00 events/0 
    4 root       6 -10     0    0    0 S  0.0  0.0   0:00.01 khelper 
   22 root       5 -10     0    0    0 S  0.0  0.0   0:00.00 kacpid 
  155 root      15   0     0    0    0 S  0.0  0.0   0:00.00 pdflush 
  156 root      15   0     0    0    0 S  0.0  0.0   0:00.01 pdflush 
  158 root       6 -10     0    0    0 S  0.0  0.0   0:00.00 aio/0 
  157 root      15   0     0    0    0 S  0.0  0.0   0:00.00 kswapd0 
  745 root      15   0     0    0    0 S  0.0  0.0   0:00.00 kseriod 
 1121 root      15   0     0    0    0 S  0.0  0.0   0:00.05 kjournald 
 1149 root      11 -10  1532  364  288 S  0.0  0.1   0:00.03 udevd 
 2301 root      15   0     0    0    0 S  0.0  0.0   0:00.00 khpsbpkt 
 3444 root      15   0     0    0    0 D  0.0  0.0   0:00.00 kjournald 
 3463 root       5 -10     0    0    0 S  0.0  0.0   0:00.00 reiserfs/0 
 
 
What I noticed (as a relative noob) was updatedb running, and 96% usage on I/O wait.  
This usually goes on for about a minute, and then stopps with no ill effects. 
 
--C

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