I have a Macbook Pro, OSx Lion, Intel Core2 Duo, 4GB Ram, NVidia Geforce 8600M GT 128 MB Ram, Intel x25m SSD. Approximately 4 years old.
I've been running Flash sites and playing videos without any problems for years. Then suddenly 3 months ago, a flash site like http://thefwa.com is lagging in all browsers. Even mouseover animations - anything.
Also video playback in e.g VLC and Quicktime is now lagging. Same videos I used before, I tried installing an older version of VLC without any luck.
Playing back video in VLC utilizes the CPU almost 100%, and Flash sites like thefwa.com easily takes up 50-60%.
It's as if the hardware acceleration stopped working, or the GPU lost its magic.
UPDATE: Same issues also occurred on Snow Leopard
Has anyone experienced something similar, or do you know what might be wrong?