We're currently using Trend Scanmail 8. Today I've had a bunch of "UPS Invoice" attachments delivered to users, and not be detected/recognized using Trend with the latest definition files. An online scan of the file(s) at jotti (I think?) clearly shows they are a virus/trojan/malware. Also a sweep with Spysweeper on a couple of PCs where people did run the executable has detected various spyware which Trend seems to have simply ignored. If I do move from Trend I would prefer to keep our exchange and desktop/server A/V with one vendor because there are usually significant financial benefits in doing so. NOD32 always pops up and I always found reasons not to look too closely or take the plunge. The last time was around 9 months back. What's the Exchange product currently like in terms of effectiveness, and above all stability i.e. I think there used to be a few horror stories about resource usage/bad updates/crashing the store etc. Appreciate any feedback, as we have a front end Exchange server with no mailboxes on it I may install the NOD32 trial on it.