Some of the newer comments that have been getting through now that I've fixed the bug in the commenting system have been rather non-descript (general 'Great site' messages). Rather than try to track down anything indicitive in them, I'm not disabling comments on all posts older than a month. Unfortunately, it doesn't look like it disables trackbacks as well, so I'll keep removing anything that does get through until I eventually replace the blog with a static CV/project portfolia. I make keep the blog archived in static HTML - I've yet to decide on that.
Edit: Nope, as I suspected, Trackbacks still work once commenting is disabled. This morning's spate of Trackback spams all seem to be from the same person though - identical IPs and all URLs ending with ~alejandro_6598/files/. The username has been banned in URLs and the IP address will be going soon (195.225.176.160 - NetCatHosting.com - USA based, but the address is listed as Ukraine)