We're evaluating antivirus software at the moment, and are currently looking at Nod32. This morning we identified a performance problem that needs to be resolved. Here's the situation: When performing a Subversion checkout a repository the performance is very poor. Ekrn.exe is taking up lots of CPU (20-40%) and getting the files takes forever. - When disabling Real-time system protection the speed is ok. - Getting the files via svn:// protocol is ok. The problem seems to be related to the file:// protocol. - Copying a file from the server to client with Real-time system protection enabled is OK. - An OK solution for us would be to exclude the local directory from scanning. I've tried this by adding it to Setup -> Antivirus and antispyware -> Exclusions (added c:\projects\*.*) but with no difference in performance. Some questions: - What are the recommended settings for Subversion usage? - How come my exclusion does not work? What am I doing wrong? The problem is reproducable on many clients, both XP and Vista machines. Nod32 version is 3.0.642.0. Any ideas?