In order to get the blockchain, I started from the beginning with a clean computer! Sometimes the download stucks getting blocks with certain number.

At the moment the process is still trying the get the following block to block 214412. Although I keep this computer running day and night there is still no progress after 24 hours!

How long must I keep running this computer in order to get the blockchain up to date again?

The error message is:

Sync data returned unknown top block: 214412

After this error message the synchronization is started again with the same result.

I had this problem before with other blocks, but this time it seems to take very long to get the following block!

If you have some ideas, please help me!