I've been upgrading hard drives since I put one in a Mac+ in 1986 and never heard or any of the problems you describe. I really wouldn't worry about rumours. We have professionals here to help you with your installation. Heres how to do it: http://www.ifixit.com/Guide/Repair/Installing-MacBook-Pro-13-Inch-Unibody-Hard-Drive-Replacement/1337/1
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I've been upgrading hard drives since I put one in a Mac+ in 1986 and never heard of any of the problems you describe. I really wouldn't worry about rumours. We have professionals here to help you with your installation. Here's how to do it: http://www.ifixit.com/Guide/Repair/Installing-MacBook-Pro-13-Inch-Unibody-Hard-Drive-Replacement/1337/1
After it's in, start up from your system disk, go to Utilities and format and partition the drive. Then install the system and restart. The only time I've ever had problems with new hard drives was when the had been formatted on a PC first.
I've been upgrading hard drives since I put one in a Mac+ in 1986 and never heard or any of the problems you describe. I really wouldn't worry about rumours. We have professionals here to help you with your installation. Heres how to do it: http://www.ifixit.com/Guide/Repair/Installing-MacBook-Pro-13-Inch-Unibody-Hard-Drive-Replacement/1337/1
After it's in, start up from your system disk, go to Utilities and format and partition the drive. Then install the system and restart. The only time I've ever had problems with new hard drives was when the had been formatted on a PC first.