I have a Samsung Droid Charge (firmware 2.2.1; Baseband i510.06 v.EE4 adn SCH-I510.EE1; Kernal 188.8.131.52; Build SCH-I510.EE4). My PC is running Windows 7 Pro (64 bit). When I connect my phone to my PC using a USB cable, Windows Explorer cannot see all of the files and folders that I can see on the phone itself using Astro or via Wifi File Explorer (a file browser that you use via a web browser on your PC --if this makes no sense, look in the Android Market for Wifi File Explorer). I *do* have the Samsung USB drivers installed on my PC. I have tried this on other PCs and Operating Systems (Windows XP Pro) and the result is the same. This is not a situation of the "missing" files and folders being hidden or system or read-only. For example, about half of my \Music\ files and folders are visible and half are not, but all are DRM-free files that I placed on the SD card myself. And the "missing" files and folders aren't just music. There are all sorts of files on my SD card that don't show up via a USB connection, but do in other ways (using Astro on the phone and using Wifi File Explorer). Does anyone have a clue what could cause this behavior? Or what the fix is?