I have a Samsung Galaxy Tab 2, a GT-P113. I had tried a developer's P3110 ROM for it, and it ran really well, but wasn't the proper ROM. When I went to restore to stock, I found that 1) Samsung quielty updated the ROM to version 3 and 2) within a few days of Samsung doing that, a developer here had deodexed it, zip aligned it, and posted it for download! Then another developer posted an improved stock kernel for the Tab 2. Now my tab really flies!