I have a customer who uses Sybiz Vision accounting software and NOD32 antivirus software. They have been running V2.7 on the file server and all workstations and have had no problems. They renewed their license at the end of last year and they wanted to upgrade to the new V3. So I did that but now they have problems with their accounting software. When trying to run a report it just crashes with no error message. This is not specific to one workstation, it happens on all the ones that run the accounting software. The accounting data is stored on the file server (Windows Server 2003) and has no backend or anything like that installed on the server. Even if I disable NOD32 on the server the problem is still there. The only way to fix the problem is to uninstall NOD32 from the server. I have tried adding exclusions to NOD32 but it made no difference. I don't think the problem is the AV scanning part because even with it disabled the problem is still there. NOD32 must install some other stuff that is interfering with network traffic. Anyone got any ideas?