Issue 2 KX: 4.0.12 (RC2) - no problem with earlier versions Many times when starting Windows, the wallpaper will appear and then nothing. The mouse cursor moves but no other activity. Pressing Ctrl-Alt-Del once does nothing, twice shows a "Windows is busy" blue screen. Pressing a key, gives the Task Manager. Task Manager shows only one process - mprexe (not responding). After I end this task, there is some disk activity then nothing again. Then Ctrl-Alt-Del again as above, but this time it shows msgsrv32 (not responding). After ending this task, nothing - I have to restart. Workaround: Install Revolutions Pack 9 (with KernelEx 4.0 RC2) (!) I noticed the printing problem as well, but I think I have a solution. Search for the spool32.exe file and right click on properties. Click the compatibility tab, and select disable kernelex extensions. Your printing problems should go away.