Well, I ran into my first JB problem. I installed IncarcerApp, which is supposed to let you turn off the home button at will - trying to iPad one-handed while feeding the baby, I often hit home by accident while holding the bezel.
I went in and turned it on... And my iPad promptly froze. I had to do a hard reboot (holding down both sleep and home buttons), but then I was able to go into cydia and remove the offender. No permanent damage! But it did remind me that I should really be backing up more often, especially before I install any JB apps that aren't well-known to be stable. But yeah, steer clear of IncarcerApp.
I do, however, have RetinaPad, SBSettings, Activator, BrowserChanger, and several other JB apps/tweaks running beautifully!