Rated 5 out of 5 stars

My system is an HP laptop (dv 1000 series) running XP sp3. My business and personal needs are fairly simple such as no invitations, attendees, etc. I have not seen the performance degraded issues reported by some.

It took me a while to figure out how to set things up, but everything has gone well after that hurdle.

If you have multiple calendars on your system, you have to be sure to make the entries within the G-calendar (my designation) as that is the only one synced to Google. Although it will pick up entries from those made in my home calendar with Thunderbird, these do not transfer to the Google calendar in the cloud, but I've merely moved over to running everything through the G-calendar as my default.

This review is for a previous version of the add-on (0.5.1).