I'm willing to bet that Outlook 2007 has numerous problems of its own, irrespective of NOD32. Problem is that I'm getting significant issues from it claiming that the NOD32 Addin causes it to crash and then be out of memory and get this annoying dialog box that pops up incessantly and refuses to allow me to even launch the Task Manager to disable. I must reboot. Here's the message I got restarting Outlook: "Outlook experienced a serious problem with the 'nod32 emon' add-in. If you have seen this message multiple times, you should disable this add-in and check to see if an update is available. Do you want to disable this add-in?"