Till point 3, that seems ok, there are point 1 and 2....
1. wallet is well synced, but during mining there is stop for a few blocks in syncing, and than again wallet continue to sync
2. Yes, i have address with 50000+ blocks. This address in the .dat file in config
If you see in the miner i have like two blocks found in a few min, but one of them coming to my wallet and than gone, but the second stay
1. Version of the wallet ?
2. 50000+ blocks ?!?! probably BCR !, adress is miningkeys.dat, or in what config ?!
3. How many connections have in your wallet ? (getconnectioncount)
4. Port is default (8877) ? It is open in your firewall ?