I just purchased two used GH2's. I cannot figure out why one camera shows a recording time of over 2 hours and the other only shows a recording time of 43 minutes. Both 16GB SDHC cards are identical and have been formatted (multiple times, actually). My current record settings are for Manual Movie Mode and recording 720P/60 (SH quality). The only difference is the cameras have different lenses. One (the 2-hour one) has the 14-140mm kit lens and the other (the 43-minute one) has the 45-200mm lens on it. Other than that, all else is the same. I am superiorly perplexed! Oh, also I notice every time I wait a day to turn my camera (the 43-minute one) on, it asks me to re-input the clock settings. I figured this was just a small glitch and not related, but thought I'd mention it. Could one of these have been hacked maybe? Anyone have this experience out there... would love to hear your suggestions/advice. Thanks!