well it worked, i removed what you said and the new wallet started, it found connections in a few seconds.
this is the superblock i found today, 118k of graincoins, (i have approx. 900 kh)
thanks!
http://prntscr.com/2fwk5nDamn you get blocks fast... I must be unlucky. Usually 1 block every 2-3h and always normal blocks with 800kH/s.
Sadly I can't mine more than 2-12 hours per day as it's my gaming PC and can't leave it on while sleeping (gf says it makes too much noise).