Half life 2 achievements problem

[stanislav_kvasov]

Hi all! I've got a problem. This little message window about unlocked achievement isn't showing :( It's just appears in achievements list in game menu, but not in game itself. I've already try reboot PC and restart steam client, but it's no difference. So maybe you guys know what's the problem?
Thank you forward for your help! :)

[_GoldSrc_]

Steam>Settings> and then on the Interface tab there should be something like
"Notify me (with steam instant messages)"