Emu XL-7 & MP-7 User's Group

Has anyone had problems with it locking up when using it with 
external sequencer?  I was fine tuning a track in logic with the MP`s 
local control off and it slaved to Logic and had to reboot it three 
times in the course of the session. Seemed to lock up while recieving 
a lot of midi data, it would freeze with the recieve light on. Well 
just curious if others are experiencing the same thing.