I recently bought a second hand gh2 & when I try to record in either manual movie mode or HBR mode the recording aborts somewhere between 4 - 18 seconds if I have the ISO set to auto or any ISO above 160. However if I set the camera ISO to 160 it will record until the card runs out of space.

Cinema mode is completely stable but isn't useable as I need to record at 720p for comparability issues.

I have tried resetting the camera which changed nothing.

The firmware is 1.1 according to the camera & I'm pretty sure that it hasn't been hacked.

I'm currently using a 16gb transcend class 6 card that came with a camera - sandisk card on order

Does anyone have any ideas/suggestions?