I deposited some keys to my shop and used them to buy a couple of Bioshock Triple Packs from some shop (I can't trade directly with that shop because it kept telling me that either Steam is busy or my inventory is private all the time). So, I got those two gifts in my shop's inventory, but I can't withdraw them. It says "Certain selected items have been locked by other tasks. Please check again later" and the car picture on those gifts don't disappear. Please fix this soon, thanks!

Should be okay now. :)

exactly the same problem for me :(