Well had been playing up a little with slow responses then last night fell over and would not work - unresponsive. batt pull - start up crash about 3 times. Eventually I took the SD card out and all fine, in fact faster than ever so have ordered a class 6 to replace the ageing class 2. Hopefully this will improve things, does this seem normal or should I say - not unheard of? SD card is about 3 years old.