slow IMAP connection

Hello,

I recently installed the 2007e of UW IMAP and seeing high I/O wait on the server.  
I have about 50 users.  I'm seeing the following in the log files (hosts and IP's are concocted):

Mar 15 14:42:47 request1 imapd[1445]: Connection reset by peer, while reading line user=xxxxx host=f.q.d.n[11.22.33.44]
Mar 15 14:42:49 request1 imapd[3250]: imap service init from 192.123.45.77
Mar 15 14:42:49 request1 imapd[3250]: Login user=nnnn host=x.y.z [192.31.97.142]
Mar 15 14:42:52 request1 imapd[30847]: Logout user=zzzz host=c.d.e [1.2.3.4]

[root@request1 xinetd.d]# cat /etc/xinetd.d/imap
# default: off
# description: The IMAP service allows remote users to access their mail using \
#              an IMAP client such as Mutt, Pine, fetchmail, or Netscape \
#              Communicator.
service imap
{
	disable	= no
	socket_type		= stream
	wait			= no
	user			= root
	server			= /usr/sbin/imapd
	log_on_success	+= HOST DURATION
	log_on_failure	+= HOST
	instances               = 500
}

My initial build was like this:
make lr5 SSLTYPE=none

Any help with the performance or log file errors is appreciated,

Troy



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