Always include: Device:HTC EVO Carrier:Sprint Country / Language:US OS / Browser / build number (if applicable): At work, we use Exchange Server 2007. I have Google Calendar Sync installed on my laptop at work doing a 1-way sync to Google, so that my Outlook calendar is always reflected in my Google Calendar on the web so that my wife can see the contents of my Outlook Calendar through me sharing my Google Calendar with her. So far so good. I am logged into that same Google account on my phone. On my phone, in MENU, SETTINGS, ACCOUNTS & SYNC, GOOGLE, the check box is set for Sync Contacts and for Sync GMail. It is NOT checked for Sync Calendar, since that is not my main calendar. On my phone, in the calendar app, in MENU, MORE, CALENDARS, the only calendar selected is Exchange. the Google Calendar is not checked there either. Whenever I have a calendar entry that has a reminder alert sent, I am shown 2 of the same alerts on my phone simultaneously. The color coding of the alert shows that one if from my Exchange calendar and the other is from the Google calendar. First off all, how does my phone know the contents of my Google calendar, when I have it set not to sync and not to display? Second, why is it alerting me to appointments, when I have it set not to sync and not to display? My Google Calendar data should not even be on my phone. Why is it? Today, I was actually had a reminder alert occur at the wrong time. My Google Calendar sync doesn't run on the weekends and holidays because I shut down that work PC. After shutting down, I changed an appointment time on my exchange calendar to another time. That appointment will not sync to Google Calendar until after I get back to the office and turn on that PC. I just received a reminder alert on my phone for the OLD time, with a color code of my Google Calendar, since the Google Calendar doesn't know about the change yet. I will receive another alert at the correct time presumably, from my Exchange calendar on the phone What is going on with this?