ssh: connect to host myhost.com port 22: Software caused connection abortTry removing the entry for myhost.com from your ~/.ssh/known_hosts file.
And then ssh back into the box.
Hope that helps.
NOTE 1: if you use ssh -v (verbose) when this error occurs you may see something like this:
debug1: connect to address myFavoriteIpAddr port 22: Software caused connection abort
NOTE 2: This error occured using: OpenSSH_5.1p1, OpenSSL 0.9.8h 28 May 2008
NOTE 3: If you would like to use a tabbed terminal window try using mrxvt under cygwin