I noticed significant lag using IntelliJ on a new machine (e.g. it takes 2-3 seconds when trying to expand src folder in the package view), and although I'm not 100% positive that this is the culprit, my guess is that the lag is due to the ".IntelliJXXX" directory being placed under "My Documents/apps/xp", which itself is on a mapped directory thus incurring network cost. I tried reinstalling it with "install only for the current user" unchecked to no avail. It's unclear to me why said directory isn't placed under "C:/Documents and Settings/]]>/Application Data".
I was wondering if there was a way to instruct IDEA to use a different directory pre- or post-installation; or perhaps the lag is due to an entirely different cause I'm not aware of. I'd really like get this issue resolved since I'm afraid of having to turn to another IDE... any help would be greatly appreciated!