I am running Exchange 2000 on a server. That server is dedicated totally for that purpose. The store.exe is eating up between 95 and 100% CPU consistently!! I have installed SP4 on the W2K side. I have SP3 on the exchange itself. I am running Symantec Enterprise for my antivirus. What the heck can I do to remedy this issue? I have looked and most of what MS has to say about it and, as ususal, there sight was about as helpful as an umberella in a hurricane! Any ideas?