Outlook 2010 was what finally got me away from OpenOffice. I simply love it. However, the way it manages reoccurring events is my one really big beef. Situation as follows:
I have two meetings that run every week on the same day, and usually at the same time. I do not know many details much more in advance than the week before. I have set up a reoccurring event for both to continue indefinitely (my first mistake) and each week when I get details, I enter that in to the individual occurrences. I have several months worth that I've been working like this.
Soon, the meetings are going to be ending, and I will not need the reoccurring events to be generated ad infinitum. However, modifying the reoccurence pattern to stop on any given day in the future resets ALL events in the past back to the default. That is simply ridiculous. There has got to be a way to cancel these events and not lose that information. Much of what I have isn't necessarily important to keep, but it would be preferred and it is very easy to imagine a scenario where there could be a lot more at stake.