Whoa, I broke my gmail... "your message could not be sent because you have exceeded your storage quota."
What is with that Gmail storage usage bar? Its like they chose two colors that are indistinguishable to represent your usage and availability... I had to upgrade because I couldn't figure out how to clear space.
i just deleted about 5000 log emails and was good to go. once you "delete" them you have to make sure to completely delete them from the trash to free up space.