I can't sync

My desktop gets stuck at 10559. I tried deleting EVERYTHING a few times, always the same.
So I tried an external server. Fresh install, never seen SLM before, gets stuck at 624!
Been trying since hours now, delete everything in .slimcoin except the config with the nodes, restart slimcoind - and it always stops at the same blocks.
./slimcoind getmininginfo
{
"blocks" : 624,
./slimcoind getconnectioncount
25