Mouse Batteries Lasting a Week if I'm lucky :(

[Joe 90]

Alreet, had my nice new MS desktop 6000 for a couple of weeks now. Alls well apart from the Mouse.

The batteries that came in the box, nice new duracells they were - lasted a couple of days before I got warning prompts that the battery level was low.
Now I am lucky to get a week from a set of batteries. I can't honestly believe they're empty when it says but its so annoying that i've been changing them anyway.

But i've just about had enough, you see along with this warning message it sends a whole load of button press messages (despite no buttons being pressed) which causes all sorts of havoc. The last one which prompted this thread occured as I'd just got to the last few options of a vB usergroup edit! the prompt popped up, I ok'd it and then the browser changed to 'user group saved' without me clicking anything else, and vista's 3d flip thing started flipping about like crazy. i've not changed the batteries, and its working fine again. just flips out like crazy every now'n'then

yeah, so anyway... That trusty old Wireless Desktop Elite used my standard energizer rechargables that I put in my xbox controllers and lasted for months... put them in this mouse and its a matter of hours/day or 2.

anyone else ever had this, or have any suggestions

*edit*
OMFG it hasn't saved any of that usergroup info!!!! I'm hating setting up this bloody forum!