well, seeing as how the plesk admin web based updater will not tell you if you dont have enough space for the update, and will not give you the option to pick another location for temp files, and will not warn you that the update failed.. the only way to update a box with this issue would be to do the update manually with autoinstaller, specifying a different temp folder for package storage.... if you are having any problems with updater, i would recommend running autoinstaller as you get a chance to see whats going on... im sure there is a log file somewhere for the web based updater, but you will need to dig around a bit (it would be nice if plesk updater would tell you the location of the log file ahead of time so you can check if things dont go as planned...)