I can confirm this bug. The problem emerged since I updated to 9.04. I also have an ATI HD 4850. After some hours Xorg uses several GBs of memory. It takes noticably longer compared to 8.04 to maximize/minimize windows (it seems to hang for 2 seconds, then the window appears). Xorg is using almost 100% of one core (I have 4).
I wonder why this bug still isn't fixed, given that it is known for almost a month now and so many people are having this problem, sometimes making the system unusable, because limited memory is used up pretty fast.
I can confirm this bug. The problem emerged since I updated to 9.04. I also have an ATI HD 4850. After some hours Xorg uses several GBs of memory. It takes noticably longer compared to 8.04 to maximize/minimize windows (it seems to hang for 2 seconds, then the window appears). Xorg is using almost 100% of one core (I have 4).
I wonder why this bug still isn't fixed, given that it is known for almost a month now and so many people are having this problem, sometimes making the system unusable, because limited memory is used up pretty fast.