We are currently running Exchange 2000. Yesterday I noticed the STORE.EXE service was using 450 megs of memory usage in task manager. I applied Microsoft's fix and it seemed to fix the issue temporarily and knocked it down to about 50 meg. This morning I checked the mem usage and it was back up to about 400 meg. Since I applied Microsoft's fix, could there be something in Unity triggering this? Is this a known issue with Unity 3.X and Exchange 2000? When the mem usage gets this high, Unity stops responding. Thank you for your help.<br><br>