MailScanner hangs once a day

[Sergio García Caso]

Hello,

I have installed MailScanner 4.54.6 with Postfix 2.3, SpamAssasin 3.1.3 
and ClamAV 0.88.4 in a Mail Gateway with Ubuntu 5.10.
The problem is that MailScanner hangs once a day (always at 09.30-10.00) 
so I have to restart it  (/etc/init.d/mailscanner restart).
I get the following info in the log ('mail.info'):

 ...
Aug 24 09:34:48 localhost postfix/qmgr[15569]: 31C882B46B2: 
from=<tl.support at thomson.com>, size=2840, nrcpt=1 (queue active)
Aug 24 09:34:48 localhost postfix/qmgr[15569]: EDDB92B46B4: 
from=<maildispatcher at wotrant.com>, size=10478, nrcpt=1 (queue active)
Aug 24 09:34:48 localhost MailScanner[3295]: Uninfected: Delivered 4 
messages
Aug 24 09:34:48 localhost MailScanner[3295]: Virus Processing completed 
at 3609875 bytes per second
Aug 24 09:34:48 localhost MailScanner[3295]: Disinfection completed at 
932113606 bytes per second
Aug 24 09:34:48 localhost MailScanner[3295]: Batch completed at 1538 
bytes per second (168675 / 109)
Aug 24 09:34:48 localhost MailScanner[3295]: Batch (30 messages) 
processed in 109.62 seconds
Aug 24 09:34:48 localhost MailScanner[3295]: MailScanner child dying of 
old age
...

Can anybody help me?
Thanks.


**