Since i've installed Parallels 4.0 for Mac I am experiencing the problem, that I can only work on one user account. On any other account than mine the program won't start. It only jumps once or twice in the dock but nothing happens. Now I've installed Mac OSX 10.6 and updated Parallels to build 3846. Now the program won't start even on mine account. I've done a clean install, followed every step of the tips here in the forum. I've done a couple restarts. Installed with admin-rights and without. I've repaired the permissions and used the terminal (see http://kb.parallels.com/en/5714). Nothing worked. Please help !!!