I have outlook 2003 running under Windows xp Professional sp 3

I have had no problems until recently. At random outlook is now freezing,
displaying the hourglass and nothing then responds (keyboard and mouse are dead) and all I can do is press and hold the 'off' button and reboot.

I've tried deleting and reinstalling office and deleting outcmd.dat but to
no avail.

Any help would be hugely appreciated