We are using Autocad LT since april 2012 on a Windows 7 64 bit desktop (HP Pro 3400 MT)
For about then last 2 moths the program is locked, frequently for several minutes (up to 5 or 6 minutes), after opening the program by a doubleclick on a 'DWG' file (not a shortcut). During this period the drawing is visible, but te cursor is completely locked.
Other programs on the computer are still useable via the taskbar during this lockdown period.
What could be the cause of this problem?