EA automation - threading model

[mattb]

I am using EA as a COM server from Delphi, and am wondering about the threading model of EA.

 I have seen some evidence that causes me to think that EA supports "both" COM threading models, and that EA should be OK to be instantiated by multiple apps at a time (on a build server).  However we have had trouble with EA locking up.

To my question:
 Has anyone seen EA successfully used by more than one process at a time?  

(I'm not ruling out the possibility that my wrapper around EA's COM interface could have issues)

 - mattb