Syncing

hey guys, i got another ridiculous problemo.
sometimes when i want to play cod 6, i cant play it because it says game is syncing and needs to finish. t then comes up PLAY GAME or CANCEL. when you click PLAY GAME it says i gotta sign in to steam to play online. i can play campaign and special ops, but not online. i do not like this happening, and it happens to many times to be happy, or sad. i get fuking pissed when it happens
plz help...


ps. lvl up my little eggs below plz

Something is seriously wrong.. restart... re-log in... uh.. launch through steam, verify game intergrity cache.. anything.