This month I'm have been playing WoW without problems,but since yeterday after i inserted a new pre-paid game card the game started to Dc.After the first DC passed around 15 min before the another one which first gave me a message that I am disconnected rom battle net and the game started lagging just before as a DC.After a few second the game gave me message that i am connected to battle net and the lag stopped and the game disconnected me after 5 seconds.Today I had a DC again without any message.I am using internet via cable,not by router and i have internet all the time.I have stopped the network optimization from the game settings and deleted all cache folders.