Suddenly I cannot access any https connection. Firefox shows an error
Error code: ssl_error_rx_record_too_long
Even I cannot access Google (http). It shows blank page most of the time. I did not do anything at all. I Googled about ssl error but all indicated apache2 virtual-host fact. But I don't have apache installed in my system. I did not change any kind of config file. So why is it happening?
I am using a modem (with WiFi router facilities). Other computers in this network are working just fine. I am using 12.04 64bit. System date is okay (synchronize with time server).