what to do?on my htc desire video playback and record lags big time,even whey i try to play video that i record with my phone on my computer..it's running latest 2.2 froyo update..it came with 4gb class4 micro sd card but i bought 8gb micro sd clas 2 also Sandisk..i tried to record and play videos on both cards and still lags..i'm not running any applications in background killed them with task killer..Whats the deal,should i buy faster memory card or what?Maybe it's problem in softwer?what to do?