Is anyone else seeing this? I'm guessing these tickets are being created by email?
Can you tell us a distro to inspect?
Looks like Captcha-reCaptcha has the most in my inbox.
This is nothing new. There are several spam tickets in the queue every day -- you just usually don't see them because little elves clear them out. I'm back from my business trip now so things should appear to return to normal :D
Remember, you can always mark a ticket as spam by clicking the S in the upper right corner - two spam votes (from any RT users) will delete the ticket.
I blog about Perl.