Back in May, I had posted an issue with lirc, Mythbuntu, and my MceUsb2 Remote. The final solution ended up being just waiting some time, running the update manager to update the machine, and trying again.
If you didn’t see the comments, Orlovsky did post a helpful link to a bug. My attempt was going to be to try to remove the old kernels and see if that would fix it. But, like I said, some update fixed it in the meantime — I am grateful to the community.
To be complete, my remote is AVS Gear GP-IR02BK Vista 2 channel IR Remote Control. It seems to work pretty well with Mythbuntu. MythTV.org has a good resource for configuring the remote.