Version: (using KDE KDE 3.5.5) Installed from: Debian testing/unstable Packages This has been reported in Debian BTS at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=414033 i just installed umbrello looking for a entity relationship diagram editor. after creating a new ERD the drawing window (right one) freezes. it seems it's never repainted because when you put another window on top and back again you see the broken window in umbrello. because of that, the whole feature is unusable. switching to other diagrams still works, so the application doesn't hang. you can also close the current file, and continue to work on other things.
As already explained at http://bugs.debian.org/414033, this was fixed in version 1.5.61, see http://websvn.kde.org/branches/KDE/3.5/kdesdk/umbrello/umbrello/umldoc.cpp?r1=623034&r2=630936