I can\'t commit .htaccess files from my Windows SVN client (TortoiseSVN). The error that is returned is:
Could not read status line: Existing connecti
Are other files committing from TortoiseSVN?
If the commit is working from an SVN client on the same box as TortoiseSVN on the same working copy (can you verify?), then my guess would be different SVN and TortoiseSVN client versions causing the problem.
TortoiseSVN -> About will report the SVN client version is was built with. Check that your client/server versions are compatible.