So i just have a regular laptop 2.10 GHZ, 8 gig ram (is this fine for mining?) and want to mine Quark coins (as my computer speed sucks for mining bitcoins right?)

As per this thread

https://bitcointalk.org/index.php?topic=260031.msg2948566#msg2948566

ive downloaded the miner here

https://github.com/Neisklar/quarkcoin-cpuminer

But i get the error msg 'json_rpc_call failed retry after 30 seconds' and it waits 30 seconds then retries then fails again.

Any help appreciated.