Well I had the same problem on my dell i5 at home.
(Here I'm using the laptop of my girlfriend to test it).
Ironically I had the same problem and it took severeal hours after reinstalling and writing differnet texts in the datacoin.conf.
Sometime it works, but also there, I don't know why.
And then after clearing this problem during syncronizing I get the datacoin error " failed to read block".
Actually I thought it would be a little bit easyer to mine some ALT coins, but that's not the case
What means dnsseed issues? How can I fix that without really knowing what it is
stefan