If you are still looking for information on this:
No, there has not been any recall.
It is not a real common problem. I only see 1 or 2 a year, which is not many. (LE errors on washers are much more common, for example) The part number of the drum for a DLE2512W dryer is 3045EL1002D and lists for just over $100. You can find a service center to order the part from (in the US) at
http://us.lgservice.com/index_b2c.jsp
I would rate the repair at about a 5 or 6 out of 10 on a scale of 1-10 in difficulty. (Basically, remove top, remove front control panel, remove front panel, remove front drum support, remove belt, drum comes out the front, reassemble.)