I rarely have a problem with NOD32 until now. AV V4, Win 7 Pro x64. I noticed over the last couple of days a massive internal network slowdown - I can't be precise about when it started unfortunately, but it's very recent, as is the upgrade to W7 x64. Yesterday I was copying large files from the desktop PC to the NAS drive and noticed that Windows was cheerfully telling me that a 4.5 GB file would take around an hour to copy, as opposed to the usual 10+ minutes or so. Speed was around 997 Kbps. Also, access to the NAS drive web interface was very slow. Played around with a lot of ideas until out of sheer frustration I removed NOD32 completely and tried again - instantly the same file had a transfer speed of around 6+ Mbps! I confess I have not re-installed NOD32 - yet - I just wanted to check here to see if anyone else has experienced a similar issue and if so what the solution was. This is not a network NOD32 install - NOD32 runs standalone with default settings on each machine which is purely a home network environment with the NAS acting an an always on backup / media server. Any thoughts? I'm a long term user of NOD32 and don't want to go elsewhere. Thought I'd try here before calling the support line.