Not a PG question: SCSI question

Hi !

I have 2 servers running apache, php and PG 7.0.3 running under Linux

The first one uses IDE disks, and everything run fine and fast. (uses linux 
2.0.36)

The second one uses SCSI drives with a Adaptec adapter. (uses Linux 2.2.14)

My problem is that acces to the DB on this server are very very slow (I 
guess that it s particulary slow when i do INSERTs)
It s so slow that even the keyboard and the display slow down ! The HD 
write or read a lot...
When I do a "ps" or "top", I don't see any process taking all the ressources...

So, I guess there is something whith the SCSI...

Is anybody has a clue ??

thanks !

jean-arthur
PS : I did a vacuum analyze, and the table are not so big (max tuples are 
5000 )

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