New BF2 install, which patch to use?

Well, I tried the previous patch before but does not do me any good when it comes to playing multiplayer online. So I upgraded it to 1.2 and haven't got major problems with for the most part.

One thing that bugs me is that sometimes in BF2:SF I shoot enemies in prone position with anti-tank weapon and it doesn't kill them. I was amaze an anti-tank weapon does little damage on direct hit. Or if your too close to your opponent in prone position you can't stab them to death. It's just weird.

I hope the rumored 1.21 patch would fix some bugs in 1.2.

Thanks!