this problem happened today to me. from abt 10:30 to 1:30 it was connecting but no sites were opening or even pinging.earlier d/c and r/c 2-3 times wud solve problem but this time i kept doing d/c, check and r/c but nothing happened for 3hrs. finally now it has worked.even friend in kandivli faced same problem. so god knows when will they solve this problem.