i have a user who has permission (including send on behalf of) to access her boss's calendar and create meetings and appointments on there, including those where she invites others to the meeting. many of these are recurring appt's.

this user will occasionally make changes to some of these and send out an update. in at least one instance he was sent an update to someone and what he got was different than what was on this user's boss's calendar. it was exaclty one day off.

i've looked at her machine. time zone, date, time and all regional settings are right. looked at this other user's machine. everything there is right, too. any ideas on what might be causing problems? also, i've been told by this user that this problem crops up occasionally, so this isn't the first time.