Plesk 9 is buggy and clunky, it is impossible to find anything and often there are 2-3 ways to do the same thing. The user interface looks like someone took a big showel and just showeled feature in without any plans or thoughs. Also the change of license key format is rediculous. I have 30 keys for Plesk8 that are now useless with Plesk9. Arrgh!