Haven't been able to find another post along these lines in this forum. Have Plesk 8.0.1 on Debian up and running, mostly fine, except for the webmail portion. I can log into IMP fine and am prompted with my inbox, however none of the extra components work (Filters, Calendar, Address Book or Options), they just return back to the Inbox. I tried another thread and completely removed Horde and had Plesk bring it back down, still doesn't work. Has any one else experienced this problem, and were you able to fix it (and how)? Any advice on this would be appreciated as I can't give me users webmail access that only partially works.