System crashing when swap hits 25%

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	G'day all,
		This is an inconvenience that I would like to get to the bottom of.  I
have a PII 233MHz 512 MbRAM running FC6. All is fine until swap reaches
about 25% used then the system hangs.  It will run for days with the
swap at 10-15%.  My first thought was to run badblocks to see if that
was the problem, since it is an old drive, but couldn't find the swap
device with mount.

	My questions are: what would cause this system to hang when the swap
file is used?; where is the swap file?; if in the VG, how do I umount it
to run badblocks?  Here is some output that may be useful.

	Thanks.
[simon@Ipex ~]$ free
             total       used       free     shared    buffers
cached
Mem:        515220     506260       8960          0     111608
166892
-/+ buffers/cache:     227760     287460
Swap:      1048568          0    1048568
[simon@Ipex ~]$ df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
                      12347224   9727388   1982500  84% /
/dev/hda1               101086     10825     85042  12% /boot
tmpfs                   257608         0    257608   0% /dev/shm
[simon@Ipex ~]$ mount
/dev/mapper/VolGroup00-LogVol00 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/hda1 on /boot type ext3 (rw)
tmpfs on /dev/shm type tmpfs (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
nfsd on /proc/fs/nfsd type nfsd (rw)
[simon@Ipex ~]$

                                             
-- 
Regards
Simon


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