Comment My opinion (Score 1) 465
It's OK, I guess.
One issue I have with it is that I like to disable real-time scanning with any AV software I use, because it makes file management rather sluggish, particularly if I'm working in a folder containing a lot of executables. Before trying MSE I've been using AVG Free with the real-time scanning turned off, which works really well. If I download something new and I'm suspicious, I simply scan it manually via a right-click and scan in Explorer. Plus, I can tell AVG to ignore the fact I've turned the real-time scanning off and it won't bug me or complain about the fact. With MSE, if you disable real-time scanning, the tray icon goes read, and in Windows 7 you'll be prompted by the action center that it's disabled, but unlike AVG, I can't find any way to tell it that I know what I'm doing, and to trust my judgement.
Real-time scanning is a pain in the ass. It's necessary if you don't have any discipline when using a Windows machine, but if you do, you should be able to disable it without the AV software treating you like an idiot.