I just tried to download and install Ace. When I do, it gives me the working swirly, then just stops. Is this normal?
Mostly it takes some time for the skin to install (without giving visual feedback). Wait a while, if that doesn't help you can post your xbmc logfile.
also make sure that the skin is compatible with Frodo and check that repo where you pulling it from is OK
Ok, managed to get it going. Maybe I'm spoiled by a faster machine but it seems to change folders very slow.