Clean up script for tmp files

[Remco Barendse]

I know the subject was discussed on the mailing list several times but i 
didn't find the ultimate solution.

Does anyone have a super duper cleanup script for all the files in :

/tmp
for files like  tmp.DPhoj31724

/var/spool/MailScanner/incoming/SpamAssassin-Temp
for files like  .spamassassin3805xUDKuUtmp
                 MailScanner.0aOrDx
                 tmp.IKiiOy6683

They are seriously clogging up my filesystem and slowing down the system.

I tried to script something based on the age of the file but it didn't 
work (maybe because most are zero byte files).

Thanks!

Remco