Found a cool little app that checks for new mail in your Gmail account every 'n' minutes. It's a Mozilla extension, and it runs in the bottom right of the status bar.

Linky: http://www.nexgenmedia.net/extension...tifier-0_2.xpi

You simply login once, and it will check for new mail at certain intervals you specify. I searched and hadn't seen this posted yet, so I figured a lot of us Gmail/Mozilla users might like it.

I found it on http://weblogs.mozillazine.org/doron/