Kernel 2.6.11
On the plus side, I installed the new Linux kernel (2.6.11) some time within the last 48 hours, and it looks like the bugs in 2.6.10 with growisofs and DVD burners was fixed; k3b seems content enough to burn ISOs again. Which is nice, because I was tired of typing the stupid command by hand in a root console window.
Now if I could just find enough time to actually burn all these ISOs. My hard drive is getting pretty full…