Atrides & me found a fix (well, he came up with it, I just found another spot which has to be fixed ^^) for ccminer 0.3 to work with dwarfpool for GroestlCoin:
edit cpu-miner.c line 672
if (opt_algo == ALGO_FUGUE256)
to
if (opt_algo == ALGO_FUGUE256 || opt_algo == ALGO_GROESTL)
edit cpu-miner.c line 722
if (opt_algo == ALGO_FUGUE256)
to
if (opt_algo == ALGO_FUGUE256 || opt_algo == ALGO_GROESTL)
stratum works now on
http://dwarfpool.com/grs 
Have fun & join the boat ^^