Odd WordPress Date Issue

I noticed something lately on the blog here. I'm fairly certain that this isn't a setup issue, but a WordPress issue.What I've been seeing is when I save a draft of a post, the publish date somehow moves back a month. This happened a few times for me already. The first time was last weekend and it happened yesterday as well.My post from yesterday was posted yesterday (duhh), but it was dated not May 9th, but April 9th. Exactly one month in arrears. Thankfully, I've noticed this trend and I'm now checking to make sure this is posting on the right day, but this is still an annoyance.A bit of Google-ing hasn't turned anything up on this. Perhaps this is my opportunity to learn some PHP? heh.