TortoiseSVN of Hell

Just researched about 2 days to find out why a cannot connect to my repository via ssh and private key file.
Only the following few steps were necessary to solve me issue:

• Reviewed nearly everything
• 3 times generate new private/public key pairs
• 2 times reinstalled Tortoise
• remove all stuff from registry which contains anything about Tortoise
• demotivated bang your head against a wall
• bored reading of the tortoise help

suprise: the rescue paragraph:
If you use this last method, be sure you do not have a default username set in PuTTY. We have had reports of a bug in PuTTY causing connections to close in this case. To remove the default user, simply clear HKEY_CURRENT_USER\Software\SimonTatham\Putty\Sessions\Default%20Settings\HostName


Good damned, yeah guys this was exactly my problem. Thanks for the good documentation. But please, ensure to get better error messages as "Connection closed unexpectly"