It seems that recently discovered GMail vulnerability has been fixed. From the article:

"GMail messages are vulnerable to interception. An attacker has only to transmit malformed test messages to himself, and information left over in memory, from previous messages destined for other people, will appear with the test messages, in the attacker's inbox. Sometimes, this information may include usernames and passwords... Do you use GMail? Are you communications private? Should they be? Well, here's what we figured out about the issue, that may or may not help you - or perhaps GMail, if anyone can get ahold of their developers, to tell them about it."

As reported on slashdot, the fix has been made:

"Just so you know, at 10:15am PST mails with the problematic formatting as described in your previous story stopped being accepted into GMail. Previous emails that had this problem will also no longer will be accessible."

As an avid GMailer, I'm glad to see the folks at Google were able to react so quickly... lets hope they remain one of the Good Guys (tm)!