The plan is to return to Wednesdays, but last Friday I fell quite ill and couldn't work on the comic. But no worries, I'm recovering, and as of yesterday I'm working on the comic again.
In case you missed it, I posted a news update on the homepage, just click on the logo at the top of the screen and scroll down to where the comments should be. I always update it if something changes, so it's a good way to know what to expect.
As far as the commenting goes... I don't know much about what could have caused that, but in the past we've had problems with the spam filter. I just downloaded some bug fixes a few seconds ago, so try again and get back to me. If you still have problems, I'll ask my website guy about it.