Sorry for the hassle, but I have a slightly new version of Notebarn up on the project page now, which you may want to download if you have the original.
There was small focus-related bug that would manifest when the user returns to Notebarn after an Exchange sync. I thought it had passed a test earlier in the week (before the initial release) but I must have gotten distracted and messed up the test, because the bug was back. It passes the test now, and focus works the way it's supposed to. Honest.
It allows over-the-air update-in-place ... that is, you just run the new CAB file from the project page on your device, and Windows Mobile replaces the old version with the new one.