[horde] question out performance

[Ryan McDonald]

	I'm running the head-cvs of horde/imp.  I have it talking to an imapd 
running on the same box (localhost).  My imapd is using the dreaded mbox 
flat files and I have users that REFUSE to keep their boxes clean.  Some 
users have over 1000 mails in their inbox so needless to say, each time 
imp reloads their inbox, it takes 5-7 seconds.
	I've been reading the other perfomance thread but I really can't answer 
my question from that thread so here goes..  In my situation, would php 
accelerator or imap proxy help me?  It seems that imap proxy would only 
benefit me if my imapd was running on some other box.   Would php 
accelerator cache my reads of those massive (up to 100mb) flat files?

-Ryan