Why is Magic Mouse interfering with my Mighty Mouse?

I have a 4 month old MacBook Pro 15" and an old Mighty Mouse.
My office colleague has a new-ish Magic Mouse and an old MacBook 13"
If I am moving my mouse at the same time as he is his then my cursor is inetrfered with. It either jumps about or actually moves in conjunction with his mouse. My mouse does not effect his computer and there are no button click functions interfered with.
We have deleted and re-paired both our mice/computers. I have changed batteries and deleted all paired devices except the Mighty Mouse.
Help!

Hello:
I suppose it could be some sort of frequency issue…..although that is not in my arena.
It probably will not help, but you could try resetting the PRAM and SMC on both computers.
Barry

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I bought my iMac 2 years ago, it came with a Magic Mouse, within several months I started having the same battery issues. I looked here, and on the Internet to find out if the problem was already known about, but found only people guessing wrongly at what the problem is. I do hope Apple has fixed this, but unfortunately many of got stuck with a junk Magic Mouse. As an Engineer with 25+ years of experience in the design of electrical contacts & connectors which includes over 2 dozen patents ... believe me when I say the problem here is that the recessed positive contacts (at the on/off switch end) are too deeply recessed to make contact with the industry allowed variation in AA batteries. Those contacts are too deeply recessed because the plastic is too thick (in the hole that forms the recess) and the metal contacts are not tightly up against the backside of that plastic wall, in fact it looks like they are installed with a gap and/or can deform/bend away further opening that gap even larger. As mentioned above many industry AA battery standards define the positive button contact height as being 1.0mm or larger ... however that plastic wall is about 1mm thick, add the gap for the metal contacts and you have no electrical contact no matter how much contact spring force there is at the negative end. Unfortunately, there is no simple good fix for the average person to perform, the recessed contacts can't be accessed to bend them to remove that gap and the pastic is too thick anyway .. leaving us with a "duct tape" fix, like wadding some tin foil into that positive terminal recess and swearing when it falls out during battery changes. A nice elegent fix, would involve disassembling the mouse, machining plastic, backing up those terminals... absurd right?... would be easier if Apple sent us a new mouse that works.
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I thank you for your help, Ascendi, but I have no idea what you're saying. I'm guessing I stand alone, because others do understand. What I got from it was that the batteries don't fit snuggly, and to shove aluminum foil... somewhere. I'm don't have a PhD in battery terminal dimensions and their terminonolgy. But I do appreciate that you helped.
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Hi Moonbyrd,
Welcome to the Support Communities!
The articles below may be able to help you with this.
Click on the links to see more details and screenshots.
Troubleshooting wireless mouse and keyboard issues
http://support.apple.com/kb/TS3048?viewlocale=en_US
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/ht3964
About NVRAM and PRAM
http://support.apple.com/kb/HT1379
Cheers,
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HT4144 Last April I bought a new a iMac but I didn't need to use the magic mouse until few days ago. It drives me crazy. I have changed so many butteries but keeps loosing connection. I haven't it on the wall yet but I might be close to. It has to be fau

Why a magic mouse divours batteries? Why does it loose connection evey few minutes? Can I have it replaced?
<Edited By Host>

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Just idly thinking about your post mentioning you had only had it for 4 or 5 days. Such a problem rarely gets better with time, were you suggesting you hoped it would improve, in other words?
I can see you are now aware of the packing option but if you are using Apple, Duracell or Energiser batteries packing it out should not be necessary. Any other batteries I cannot speak for.
One buys Apple because of its' reputation against other products; you will be helping to maintain that by asking for an exchange. You will feel better for it, and speak better of it.
Forgive me if the opinion is a touch biased; I've been very lucky with my iMac purchase and the only exchange I ever made only enhanced my view of Apple; it went so smoothly.
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NOT invoked by the user and cause Wrist Pain. But hey, it looks really cool ;-)
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Why is Magic Mouse interfering with my Mighty Mouse?

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