Very strange....

When I'm playing everything is ok, but in the end of game. when it comes to show how much exp u gained it kicking you from the lobby/

I tried with both pc and laptop same thing

Any one having a clue?

I have it too, except my game just quits itsself immidiatly :S

Well. I have the problem after you're done with a round, when you're normally back to lobby my game automaticially leaves the lobby. Something with Steam List bla downloading orso

indeed,it does so.
the game said to me that it was updating playlist and then this shied started: /

Have you joined any hacked lobbies lately? Some give you so much EXP it can actually screw up your game and make it unplayable. But, you can use EXP hacks to make it so you can actually play again, or you can go to prestige mode. If you're 10th prestige, you will NEED to use the EXP hacks. There are a lot of EXP hacks right here on MPGH (I count 30+), and if you search for them, I'm sure you will find one.
If you use the EXP hacks on here, most will require that you enter a number, this number is how much EXP you have. Enter 2516000 to go to level 70 instantly.

EDIT: This sounds like what you're talking about, but idk because your grammar and spelling sucks. (No offense.)

i joined a game, played, when it ended it took me back to the main menu so not the lobby and it also didnt show the game summary
and it often sais that is is updating play list

you got ass raped

i hope that leaving the lobby after a game isnt the updated playlist