This happens all the time when i'm creating a new monk,(i've tried only for human)In feats screen it says i had 2 feats,then i gave a point to snake blood but i didn't like it so i removed the point i gave...then i had 3 feats.But i couldn't make more than 3 feats.

Sounds like a problem with whatever editor you've used. Character Editors can screw up your games...

I don't use one it's in the charater creation,i even have screenshot

Oh. This sentence "then i gave a point to snake blood but i didn't like it so i removed the point i gave" brought me under the impression you did. Sorry.

This game screwup is reproducable? Do you have the latest patch downloaded? If not, download it here (http://icewind2.blackisle.com/patchv2_01.html). If so, perhaps uninstall and give it a fresh install with the latest patch.

NP,I don't have the patch installed[ btw thanks for link],I've just tried it with another skill and it worked,it also works for deep gnome,haven't tried the other races yet.

Actually, this is a bug stated by me. You can see what this bug causes here. (http://www.sorcerers.net/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=14;t=000944)