LinuxQuestions.org - login MUCH slower, some reference to AppArmor profile, screen corruption...?

Hi all, I am new to linux but will try and be as precise as I can.

I have a Dell Insp. 1545 with 3GB ram with 10.04_64

Problem: Rather out of the blue upon login, from the time of entering password to the desktop, is MUCH slower. I have no splash enabled and there is some reference to AppArmour profiles (it sits there at this apparmour reference , then sits trying to load desktop). However, I have never configured apparmor. Finally, on last login, there was some sort of screen corruption prior to getting to desktop.

Note: prior to all this i noticed that firefox "blinked" when I was using it, and then said that it needed to shutdown/restart for updates. I did notice at that time two of my previous tabs sortof acted oddly (moved around then disappeared).

Note: I have no SSH/Server software etc activated.

Shall I post the output of some logs for you guys? Any idea if any of this is related?

Note2: I did change visudo so that sudo timeout shorter than it was. However that is the only modification to the system recently.