Win 7 64bit mouse hangs every now and then

[Have]

I recently upgraded my system and installed 64bit Win 7 (previously used 32bit) and now I keep having strange mouse hangup in AH. Ever now and then the mouse cursor in AH stops responding to mouse movement, though mouse works fine when I alt-tab back to windows.

The problem usually starts when I am typing to the text radio. Only cure what I know is to close AH by alt-f4 and restart.
This happens only in AH, no problems with any other software or game.

Any ideas how to fix this?

[The Fugitive]

hitting "H" is the "mouse lock" key. You are most likely just locking the mouse. Hit H again to unlock.

[Have]

  that must be it, thanks! I didn't realize that this kind of feature had been introduced

[Dogtown]

ya i do that often..start typing before i hit / and lock the mouse up....took me awhile to figure out what was going on