Problem with tabs in vim 7

[Cezary Kułakowski]

Hi,

   I've recently updated my vim to 7.0.17 version (from some 6 version)
and I have very annoying problem with it: when I write some code in C++
vim doesn't add new tab after I make new scope (by "{\n") and doesn't
remove one tab after I close scope("}\n"). Can anybody met this problem
before?

Thanks in advance,
Cezary Kulakowski