Ok so here goes. I did not end up having anytime to test my card thoroughly. I did a few simple tests around the house and transferred the footage to my machine. It seemed like everything was good until i got to the shoot today, I inserted the card into the camera and formatted the card and everything seemed OK. I shot a 1 minute interview that took only 3 takes. I turned the camera off and later turned it back on to do another shot of someone else and the camera immediately gave me a "insert card again" I'm assuming error message. I'm new to the camera so i still don't know all the ins and outs, error messages etc.. I turned the camera off and turned it back on and same message, even after taking the card out and putting it back in. I turned the camera off and used my HMC150 for the rest of the shoot. When i got home i ran to my card reader and luckily the reader read the card right away and i was able to transfer the data. I took the card and tried it in the camera one last time but same error message. So i plugged it back in the card reader and formatted it using the computer and tried it back in the camera and it was able to read the card again which is weird. Looks like i might have to put this card to the side for any paid gigs and fork over the cash for the sandisk extreme pro 64gb card.
Oh and btw I'm on flowmotion v2.02 and was shooting 1080 24p at 24L which is 32MB/s when i got the error. Lenses were canon FD 50mm 1.4 and a Canon FD 28mm 2.8.
Now just imagine if you didn't have your other camera with you..... When dealing with Hack GH2 that you know requires higher level cards it's to much of a gamble. The higher rated SDHC cards cost more for a reason.... Lucky you had a backup.