Blocks won't verify if started with a fresh datadir and mining

[maran]

When starting with a fresh data folder and mining enabled blocks that have already been found won't be validated.

2014/05/13 17:06:27 [PEER] Found conical block, returning chain from: c87939ffc7eb183dd22b70007d607a15e0beeb99bb9ddc842f698364c99a6c02
2014/05/13 17:06:27 [PEER] Returning 4 blocks: c87939ffc7eb183dd22b70007d607a15e0beeb99bb9ddc842f698364c99a6c02
[SM] Error validating block: Block timestamp less then prev block -10
2014/05/13 17:06:27 Block timestamp less then prev block -10
2014/05/13 17:06:27 [MINER] Mining on block. Includes 0 transactions

You can replicate this by rm -rvf ~/.ethereum and then starting with ethereum -m.

If anybody is able please confirm that I'm not the only one with this problem.