sewinglady:
I have no problems with the microSD cards that are in the slot. They have always worked fine and still do. The SDHC "camera cards" are the full size (not micro) cards. I do have the SD card and the USB adapters (actually have 30 pin to USB adapters rather than the separate adapters that Samsung sells) for the 30 pin slot and have been using them since I bought the tablet in May of 2012 both for the SDHC camera cards and also for USB thumb drives. When we travel I use them to transfer daily pics from my camera to a "daily folder" and then make a backup copy to the USB thumb drive. I also used the thumb drives for Excel and Word files to use on the Tab.
Since I now cannot use the thumb drives, I will be using SDHC (or microSDHC with the appropriate slot adapter) cards as "thumb drives" for documents and backup storage. It will work OK, just a little more cumbersome to deal with using the reader, then plugging the reader into the USB adapter, not that big of a deal though. Might just start using the microSDHC cards in the camera as well but it is a pain to deal with the little cards sometimes, in & out of the slot multiple times to download, copy, backup and then back in. Just have to change the way I do things. Had the workflow all down and now I just have to change it up some the get the same results.
Did mine as an OTA. I try to avoid having KIES on my desktop computer as much as possible, extremely bloated software that keeps wanting to inject itself into the start menu no matter how many times you try to stop it with msconfig.
FWIW: When I plug in the 30 pin USB adapter with a thumb drive into the slot, the adapter will mount but the thumb drive will not show up as a drive and I do have the LOST.dir on the drives also. SDHC cards will mount and show up a drives but not thumb drives (several different sizes and brands of drives).