MailScanner hangs once a day

[Sergio García Caso]

- I cycle my syslog every day.
> - Syslog continues running after MailScanner hangs.
> - In /var/spool/MailScanner/incoming/ there are several dirs with mail
> files. There is another file too called 'SpamAssassin.cache.db'.
> - In /var/spool/MailScanner/spamassassin/ there are several files called
> 'bayes....' (for example: 'bayes_toks.expire10031',
> 'bayes_toks.expire20819')
> - I use the virus scanner ClamAV 0.88.4
> - I use Spamaasassin 3.1.3
> - I use Postfix 2.3 and it continues running after MailScanner hangs
> 
> 
> 

>I wonder if there is a bayes expire problem here.
>Could you give your settings for the following;

># To avoid resource leaks, re-start periodically
>Restart Every = 7200

>Rebuild Bayes Every = 86400

>Wait During Bayes Rebuild = yes

I have the next values for this parameters:

    * Restart Every = 14400 (it runs OK)

    * Rebuild Bayes Every = 0

    * Wait During Bayes Rebuild = no

I tried 'Wait During Bayes Rebuild = yes'  but MailScanner hangs too.