I've been trying to figure out why my textpattern run time has been so slow. I'm trying to get to the bottom of it, but in the meantime, my apologies to readers.
I've probably buggered something up while adding in some of my tweaks or installing a plugin somewhere. I'm taking off a couple of features that I think might be causing problems while I'm working on them.
Also, I'd just like to quickly thank vigo, who helped me find one problem that was slowing things down a bit: textpattern's logging script does a DNS lookup so that it can log host names rather than just the IP address of referrers. Moving this lookup into the back-end slows things down for me rather than you lot.