Beerbud, I'd compare that to what Prosper's My Account --> History --> Account Transactions says.
On mine (much smaller numbers than your account) if I go to the Account Transactions page, select Recovery as the purpose and wrap the dates around 2011, then copy/paste the resulting chart into Excel, I get 22 transactions that total a sum of $10.20 in recoveries.
Prosper's 1099-B lists five recoveries (two are identical) and one $1.35 charged-off loan that have a sale price of $0.27 in short-term and $11.89 in long-term.
For the small numbers in my account, it's not such a big deal, but for folks like Beerbud I imagine the difference could be significant.
ETA: corrected my description of the 1099-B