I left my notebook alone for one hour; now, 1h10min later I am on 13800 blocks reamaining -> 2200 Blocks in 4200sec -> ~2sec per Block.

At the current rate, ETA is 7.6h

I have:
Intel(R) Pentium(R) Dual  CPU  T2390  @ 1.86GHz
2GiB notebookram (dont know the frequency)