android, apps can't connect to internet, except browser

I came across this problem, that in my android phone, i was not able to connect o gtalk, whatsapp, maps etc, whereas  I was able to browse internet via browser.

The reason I found out was that I came across a wifi connection sometime that blocked my phone apps from connecting to internet. After that, even if I use data connection via sim, I was not able to use internet based apps.


The solution is:

go to

Settings->Wireless and Networks ->Mobile Networks-> Access point names

Now, right click and select 'Reset to default'.

That's it, now I was able to connect these apps to internet.