procmail keeps running out of resources?

hey folks, been running crm for years now and this problem ive been having is driving me nuts..
I only run 2 accounts on my server for mail, mine and my wifes.. mine (of course) seems to run fine, but hers 


 Subject: Laugh Away Your Stress with these Funny Tips
  Folder: /home/thewife/Maildir/new/1302105620.15673_1.beast                 29782
procmail: Program failure (-25) of "/usr/bin/crm"
procmail: Rescue of unfiltered data succeeded

so yeah the usual fix is to edit the main.cf postfix file and up the values for 
message_size_limit = 246240000
mailbox_size_limit = 259240000

and this seems to work for like a week or so.. procmail works fine, but then it will stop working again..

I up the limits and it works for a while..

now, Im up to 
message_size_limit = 316240000
mailbox_size_limit = 329240000

and hate to keep raising these limits if I dont need to. like I said, my account doesnt  have this problem, but the wifes inbox does.
what else can I look at on the crm side?

CRM114-Version: 20090807-BlameThorstenAndJenny ( TRE 0.7.5 (LGPL) )


Jason


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