I just installed a fresh Windows 7 Home Premium on my PC and wanted to reestablish my conection to a Git server. Therefore I copied my old .shh folder from the old installation into C:\users\user.ssh including a id_rsa, id_rsa.pub, known_hosts and a key.ppk. (everything was working with the old system). Afterwards I tryed connecting via Putty and Git Bash both failed. Putty just gave a cryptik "connection timed out" Git Bash returned:
ssh: conncet to host xxx.xx.xx.xx port 22: bad file number
fatal: Could not read from remote repository.
The problem solved it self - I do not know why, but now everything is working properly, in the meantime Skype and some Windwos updates have been installed but I am not shure how this might affect the git system...