Popping out of Fullscreen.
 

This seems to have come about with the V35 Patch.

At first I couldn't figure out why the game was minimizing and going into windows mode every time I'd go to click my chatbox on the bottom of the screen.

I then realized my mouse pointer is going from the golden eq arrow to a white windows arrow when pointed an inch from the bottom, far left and top of the screen so if I click anywhere there it selects the windows desktop. Oddly enough the far right side of the screen doesn't do this at all.

Other than playing in windowed mode does anyone have a clue what might be causing this?

Other than the V35 files the only thing I changed was from XPSP3 compatability to Windows 2000 compatability, which fixed the V35 gamma issue.

you need to go into your eqclient and make sure resolution is set to same as your monitor and then make sure ingame it is the same.

Hey thanks for the quick response =) I'll give that a shot. Just thought it odd that this kind of happened out of the blue after playing since August.