[Q] ile system disappear for very short time under AS 2.1 !!

[bbaa aaa]

We have several dell server upgraded from Redhat AS 2.1 2.4.9-e.25 to e.38.  
One of server have wield problem happen.  the /var/log/message file show 
every day have very short period time  /u1 disappear.   Does anyone know 
why?

Mar 28 08:46:05 db2 rpc.rquotad: Can't find filesystem mountpoint for 
directory /u1
Mar 28 19:04:37 db2 rpc.rquotad: Can't find filesystem mountpoint for 
directory /u1
Mar 28 19:05:30 db2 rpc.rquotad: Can't find filesystem mountpoint for 
directory /u1
Mar 29 02:48:32 db2 rpc.rquotad: Can't find filesystem mountpoint for 
directory /u1
Mar 29 07:10:43 db2 rpc.rquotad: Can't find filesystem mountpoint for 
directory /u1
Mar 29 11:17:27 db2 rpc.rquotad: Can't find filesystem mountpoint for 
directory /u1
Mar 29 11:41:21 db2 rpc.rquotad: Can't find filesystem mountpoint for 
directory /u1
Mar 29 11:44:44 db2 rpc.rquotad: Can't find filesystem mountpoint for 
directory /u1
Mar 29 15:53:41 db2 rpc.rquotad: Can't find filesystem mountpoint for 
directory /u1
Mar 29 19:02:03 db2 rpc.rquotad: Can't find filesystem mountpoint for 
directory /u1
Mar 30 02:48:29 db2 rpc.rquotad: Can't find filesystem mountpoint for 
directory /u1
Mar 30 07:00:26 db2 rpc.rquotad: Can't find filesystem mountpoint for 
directory /u1
Mar 30 15:43:22 db2 rpc.rquotad: Can't find filesystem mountpoint for 
directory /u1

_________________________________________________________________
Add photos to your e-mail with MSN 8. Get 2 months FREE*. 
http://join.msn.com/?page=features/featuredemail