When I had done some saves ( encountered some Heavy Cruisers

) I got a CTD and the 2 last games refused to load, i.e. CTD----> Restart game---> Load in Menu---> Please Wait----> CTD.
I did some extensive Virus checks, Zone Alarm - Virus/Spyware and Registry Clean ups with Registry Fix, Ace Utility ( my computer is extremly clean

) and got no virus warnings. Started 4 other games and played about 30 minutes each with no problems at all. (SH3GWX/Oblivion/Stalker/Fear/)
The 2 last saves I did in Sh4 refused to load, though, a save that was done just prior to these 2 saves had no problems to start, so that save was no problem.
I did restart this particular save and I could play on without any more CTD/refusal to load game.
Either the save I did, saved the CTD error(crash)/and/or some instability issue is occurring at some points in the game when saving. Going to keep an eye on it.