Problem with Exim

[Aaron Dalton]

Since upgrading to the latest exim (4.44?) I will occasionally notice I 
am not receiving mail.  I will check the server (ps -ax | grep 'exim') 
and find that there are dozens of exim processes running (exim -bd 
-q30m).  I will do 'exim.sh stop' but that only kills the initial 
process and not the others.  If I manually kill all the stray processes, 
as soon as I start receiving mail new ones will appear.  If I reboot, 
then everything works fine for about 24 hours then it starts to happen 
again.  Has anybody else had this happen or does anybody know what might 
be causing the problem?  I do run Exim with Clamav and I keep all my 
ports updated almost daily.

Your time and assistance is greatly appreciated.
Aaron