SA Long Process Times / Memory Utilization (Possible Bug?)

I have tracked down an issue with my SA installation that has been reported by 
others on the list.

Basically large messages (one with multiple attachments in this case) being 
hung up by SA.  I just tried to send a 1 MB e-mail with
multiple message and pdf attachments.  SA sat there for over 6 minutes 
processing this message consuming 95%+ cpu utilization.

After some digging I would like to see if anyone else out there can reproduce 
this issue.

My environment:

 - OS X on a single processor G4 w/ 700MB + memory
 - SA 2.61
 - Post.Office mail server
 - MS Office 2000 Outlook Mail Client

I can seem to repeat the issue:

 - find a message that was sent to you that has an attachment (I have tried 
JPG, word files etc)
 - open a new plain text message in Outlook 2000
 - drag the previous received message with the attachment to the new plain text 
message
 - send the message to someone

You should have created a plain text message with the Outlook attachment pane 
at the bottom with a envelope type icon as the
attachment.  The attached messages do not get hung up in SA but it seem that if 
they are attached in SA it triggers this CPU usage
spike.  The size of message seems to factor as well.  Also when I watch the 
mail log in debug mode the 'checking message' log entry
shows the e-mail address in the attached message not the one from the enclosing 
message.

Some messages send slow and the odd one hangs and I need to kill SA and restart 
it completely.

My hunch, which could be totally wrong, is that when parsing these messages the 
multiple headers in the Outlook attached messages is
causing the problem.

Dan

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