My main question is:
Will the portable switch still work?
Currently I use a custom made "mIRC Loader" so that it loads with the portable switch - I like the way mIRC runs now. If the data was stored in %appdata% then the portable switch would effectively be broken.
If the portable switch is still working. I think almost all users will eventually move over to using a mirc loader.
The portable switch is a great feature, It should allow users to keep using the pre-existing setup of mIRC (Even on future versions)
Also, Win9X users, To see where your application data folder is, Goto start, Click run, Then type in: %appdata% - However, If you are on 9X i believe that the %appdata% folder is shared accross all user profiles (correct me if I am wrong).