I have a user that reports that she scheduled a meeting with 3 internal members and 2 external members (different company). She scheduled the meeting at 14:30, but the 2 external members saw the meeting scheduled at 13:30.

I found this link, that describes daylight saving time discrepencies.... I'm assuming that this is what happened as the time difference is exacly 1 hour!
Can anyone just clarify what is the difference between Schedule+ 1.0 users and Schedule+ 7.0 users? And can I confirm that I'm barking up the right tree with my diagnosis of this problem!!!