Does it only happen when you right click on an icon i.e. is the PC usable otherwise?
When you check Task Manager do you hit the box at the bottom of the Processes tab that says "Show processes from all users"?
Yes, only happens after first time
I right click an icon from the desktop. System "spins it's wheels" (rotating circle) until I do a Ctl-Alt-Del ... then I choose Task Mgr. Processes have CPU=00 mostly ... tskmgr alternates between 00 and 02 every 10-15 secs - while - drm alternates between 00 and 01 every 10-15.
Sometimes ESC gets me to the window where I choose 'look for a solution and restart' (sometimes left or right click brings up the window - probably anything that causes an interrupt).
After that Windows Explorer 'restarts' and everything works fine. No further problems until I reboot and fo the first right click from the desktop.
I usually start programs from the 'Quick Launch' taskbar and can start them without a problem but, even after other apps have started, the first right click on an icon from the desktop results in the 'hang'.