Jekyll was working fine for me few weeks back but now all of a sudden it gives me the following error:
TCPServer Error: Address already in use - bind(2)
INFO
I have met this problem recently.
I tried out all the method mentioned above, and even restarted my computer, but still couldn't solve it!!! Then I removed the jekyll and installed a new version, it just worked.
gem uninstall jekyll & gem install jekyll (maybe you need super user priviledge).
If you really get annoyed with similar bugs, this sb method is worth a try...