Usually these are small issues that clear themselves up over time. This instance may also be affecting the ability of others to post threads in the rest of the forum. We are looking into the problem, so hopefully it won't take long to clear up.
In the meantime, if anyone is suffering from a perpetual error code in the SB or when trying to post in the forum, try clearing your browser cache, restarting the browser or your computer, or, if all else fails, try using a different browser. This issue isn't browser specific, so it has struck Chrome, Safari, and IE for sure. For some, Chrome won't work, but Safari will, while on another device Safari won't work but Chrome will. So try a different browser, and hopefully that will return you to your regularly scheduled Skyrim Forums fix.