Khaled, Raccoon,
Believe it or not, it does NOT get deleted when you install it to a custom directory! I didn't even hit "use as portable". I simply made C:\mIRC and installed it there and it's not being deleted by anything anymore. So if other people who are running similar softwares to me report the same thing, tell them try installing in ANY other directory than the default. I don't know WHY this fixes the problem, but it does.
Thank you both!
