If I leave my computer on overnight, rainlender will give notifications a full day ahead. From what I've noticed, everytime the computer's time gets to midnight, the tool tip display showing the new day's events pops up, but a few seconds later, it shows up again showing the next day's.
I've tried uninstalling and reinstalling it multiple times now, and nothing has changed. The only way I can fix this is to manually close it each morning (or right after midnight each night) for it to do the correct notifications.
This is using 2.2 on Vista 32-bit.