Mighty Mouse Question.

Would just depend on what environment you are using it in and how you use it.

I think personally that they all get affected differently, looks like you might have to buy a new MM..

 

When I purchased my new iMac I got the wired version of the MM with the unit. When I saw the comments in the threads here, I made it a practice to do the shake and wipe with a damp cloth about once a week. It's been about a month now, and still no problems with it. They can be disassembled and cleaned - I saw a link somewhere here to a youtube flick that showed how to do this.

And to answer your question, I don't think that they have changed any.

 

I've had mine for 3 months, no problems, but it could just be luck. (That'd be a first. I usually get the problem products.) But I've cleaned it a few times. It's up to you, if you want to try a new one, but I don't think they're different.

 

Have you looked in the threads around here about how to clean them? I've found the method of rolling the ball vigorously on a sheet of clean white paper to be quite effective.