Chris,

     I had a few machines do the same thing. In my experience I would say
that nearly 75% of the pc's calendar updates reflected the correct time in
outlook. For all the others that were off by one hour I simply had my end
users manually adjust those settings. I had the people with outlook
appointements listed in the extended dst period to print out their calender
before I installed the patch on the workstations and server. Made it a little
easier. I think the exchange tool did an ok job. Got most of the appointments
correct but left some behind for manual update. Thats what my experience was.
Hope this helps.