what version of android do you have, I have noticed this right from the beginning with original stock 2.2.2, 2.3.3 and now with 2.3.6 every time I connect to computer with USB debug mode disabled it will enable automatically, why yours is different or is it the computer?
geeesh, you guys are a tough crowd

If you go back to the final reply from the guy, the debug mode FIXED his problem. There are only 2 options for USB debug, enabled or disabled. It's a 10 second test to see if that will fix the problem, if not, then move on to other solutions.
This is the reason android will probably die out before ios. There are too many settings and the systems just aren't as kid friendly as ios. IT'S JUST A PHONE, a person should be able to plug it in and it works.

i have 2.3.4 stock rom, rooted