Very strange, my 3rd MBP in more than 7 years and the first time I've had a problem of any consequence...until this
MBP Early 2011, 10.6.8...I noticed on the 27th that I received a battery notification that I needed to replace the battery soon...It was around the same time that the trackpad started going loopy and acting on a mind of it's own...Can't be a coincidence I figured.
Anyway, replaced the battery on Thursday AM at the Apple store and the Genius guys feigned ignorance about the trackpad problem other than suggesting I reformat.
Got home and after a full charge or whether using it with the AC adapter, the tracpad issues continue
Researched a bit and see many experience the same issue and yet I haven't come across a real solution.
On a side note, it's deplorable business practice from Apple to feign ignorance on this issue let alone come up with a work around...Makes me think it has to be a design/hardware issue
Interesting that someone mentions Android compatibility issues with a driver as I too have an Android but haven't had any software or driver changes in many months - seems unlikely to be the culprit, I wager
BTW, took me triple the time to type this out as my trackpad was fighting/erasing along the way...It's like my infant son is interfering with my typing...Really frustrating