I am tired of seeing messages like:
2014-Jun-22 06:55:07.133527 [P2P2][122.117.207.143:64670 INC]Sync data returned unknown top block: 30776 -> 18464 [12312
blocks (-17 days) ahead]
SYNCHRONIZATION started
I know it doesn't seem to do any harm, but what it is due to, a number of miners running an out of date daemon, or a stuck daemon?
Or is it just the normal message when someone tries to update an old blockchain and I am providing the sync source?
This is a customary system message in the sync process. It means that the network had a connected daemon which was mining an alternative chain of lesser lenght. Now the daemon is online and sees that the top block is alternative and began synch. The quantity of days is calculated according to the chain it's missing.