The Zohan

First things first. My Spec: Windows Vista 64bit Intel Core i7 2.66ghz ATI radeon 4870x2 (2GB) 6 GB DDR3 CORSAIR RAM Creative Soundblaster X-fi Right. I'm in the Manhattan area of the game and have many saved games in and around the chedaki final base camp, and have now after 4 retries got to a point where the game is unplayable because : there is a tank nearby with a dead driver which i use each time, because the BOOMERANG team never turn up. I destroy the base, check the leader blow up the last sentry camp and drive back to manhattan saving/autosaving along the way. I reach the base and finish the mission and start the next one, and whenever I die it loads me back to save game before I blow up the Chedaki Main base! It forgets all 4 autosaves and any overwrites I tried. I've noticed that when i save the game the save time on the files does not change and remains what it was before. Whenever I press 'esc' in the cutscene where shaftoe is announcing in the manhattan base it crashes, and if i don't i get past but like i say the game does not save. One or two other things. My game was not patched inbetween saves. I run on ATI catalyst 9.9. The game lags at 12 FPS if I have it higher than normal graphics setting which angers me too, and it's around 20 on normal, which is irritating considering my high end rig. Also, I have tried the win xp and maxmen parametres, and they don't help with game running whatsoever. I can just about live with lag but no savegames? This has to be a joke. Any help would be appreciated.