i just upgraded from x10 to arc this week and i noticed something very odd with photos. i took a few pictures and i see them in DCIM/100andro folder. then a few minutes later or after i connect the USB cable to the computer, these pix just disappear. i have done this a few times, and they simply disappear. (* note even the 100andro folder disappears). anyone experience this with the arc??? fyi..i am using a 32G sd card. ** some updates ** i put back the factory 8G sd card, took a few pictures, power the phone on/off a few times do not seem to lose pictures. i have the sandisk 32G SDHC card and it definitely causes the pictures/video to disappear whenever i power on/off. my understanding is the Arc supports up to 32G sd card, so do i have a bad card or what? anyone has similar problem?? ** updates ** i formatted the sd card using the phone and it seems to fix the problem.