I was experiencing the same problem as the OP with kernel 2.6.32-24. I installed the updated kernel out of lucid-proposed (Linux 2.6.32-25-server #44-Ubuntu SMP x86_64 GNU/Linux), and I still see the same symptom, but the call trace is now different:
I was experiencing the same problem as the OP with kernel 2.6.32-24. I installed the updated kernel out of lucid-proposed (Linux 2.6.32-25-server #44-Ubuntu SMP x86_64 GNU/Linux), and I still see the same symptom, but the call trace is now different:
Sep 24 20:32:03 pharos kernel: [ 4201.442565] INFO: task dpkg:17615 blocked for more than 120 seconds. kernel/ hung_task_ timeout_ secs" disables this message. 3ad>] schedule_ timeout+ 0x22d/0x300 f52>] ? enqueue_ entity+ 0x122/0x1a0 015>] ? enqueue_ task_fair+ 0x45/0x90 656>] wait_for_ common+ 0xd6/0x180 254>] ? try_to_ wake_up+ 0x284/0x380 350>] ? default_ wake_function+ 0x0/0x20 7bd>] wait_for_ completion+ 0x1d/0x20 6d7>] sync_inodes_ sb+0x87/ 0xb0 fb2>] __sync_ filesystem+ 0x82/0x90 099>] sync_filesystem s+0xd9/ 0x130 151>] sys_sync+0x21/0x40 1b2>] system_ call_fastpath+ 0x16/0x1b
Sep 24 20:32:03 pharos kernel: [ 4201.442862] "echo 0 > /proc/sys/
Sep 24 20:32:03 pharos kernel: [ 4201.443177] dpkg D 0000000000000000 0 17615 16766 0x00000000
Sep 24 20:32:03 pharos kernel: [ 4201.443182] ffff880425eb3d38 0000000000000086 0000000000015bc0 0000000000015bc0
Sep 24 20:32:03 pharos kernel: [ 4201.443186] ffff88042a641ab0 ffff880425eb3fd8 0000000000015bc0 ffff88042a6416f0
Sep 24 20:32:03 pharos kernel: [ 4201.443190] 0000000000015bc0 ffff880425eb3fd8 0000000000015bc0 ffff88042a641ab0
Sep 24 20:32:03 pharos kernel: [ 4201.443193] Call Trace:
Sep 24 20:32:03 pharos kernel: [ 4201.443204] [<ffffffff81558
Sep 24 20:32:03 pharos kernel: [ 4201.443209] [<ffffffff8105d
Sep 24 20:32:03 pharos kernel: [ 4201.443212] [<ffffffff8105e
Sep 24 20:32:03 pharos kernel: [ 4201.443215] [<ffffffff81557
Sep 24 20:32:03 pharos kernel: [ 4201.443219] [<ffffffff8105a
Sep 24 20:32:03 pharos kernel: [ 4201.443222] [<ffffffff8105a
Sep 24 20:32:03 pharos kernel: [ 4201.443225] [<ffffffff81557
Sep 24 20:32:03 pharos kernel: [ 4201.443229] [<ffffffff81166
Sep 24 20:32:03 pharos kernel: [ 4201.443233] [<ffffffff8116a
Sep 24 20:32:03 pharos kernel: [ 4201.443236] [<ffffffff8116b
Sep 24 20:32:03 pharos kernel: [ 4201.443238] [<ffffffff8116b
Sep 24 20:32:03 pharos kernel: [ 4201.443243] [<ffffffff81012