GMinder is now hosted on Google Code.
Mike has taken the initiative to upload the code, make some improvements, and prepare a new release. You can download version 1.3.1 now.
I no longer maintain GMinder, so please consider Mike the new lead developer. He has ideas for further improvements. Thanks for volunteering, Mike!
I released a new version (1.2.7) of GMinder today, with the following improvements:
The new Quick Add feature

I recommend installing this new version, especially if a previous version had given you trouble.
Thank you for all your suggestions and feedback!