Comment 1 for bug 436665

 uname -a
Linux 2.6.28-15-generic #49-Ubuntu SMP Tue Aug 18 18:40:08 UTC 2009 i686 GNU/Linux

With no memory issue (after X was restarted):
vmstat
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
 r b swpd free buff cache si so bi bo in cs us sy id wa
 3 0 25616 506392 45640 579564 0 1 21 12 47 42 6 2 92 1

free
             total used free shared buffers cached
Mem: 1413372 907236 506136 0 45640 579620
-/+ buffers/cache: 281976 1131396
Swap: 1670628 25616 1645012

I also noticed this in the dmesg:
Sep 25 01:18:01 jenshen kernel: [298573.363150] vmap allocation failed: use vmalloc=<size> to increase size

I am uploading the last dmesg log anyways.