Alert: Pop-up, don't give your username and password

Today, something is going on with Blogger. Even when I am already signed in, whenever I attempt to get to the Dashboard, a pop-up appears which asked for the username and password, and foolishly, I gave my username and password. However, I think that that is a foolish and unneccesary thing to do because if you click the [x] (cancel), you will still get to the Dashboard. I am wondering if this is an attempt by some hackers to get our Blogger username and password for spamming, hijacking and other purposes.

If you get that pop-up, my advice is to click [x] (cancel) and not give your username and password. Because I gave it the first time, I have quickly changed my Blogger (Google) password, and now I believe I can sleep better.

Update 3 May 2007: Blogger Employee at the Google Blogger Help group have informed us the pop-up was from Blogger, but it had been fixed. He also assured that their username and password had not been compromised. However, I am still of the opinion that I did right in changing my password immediately as it is always better to err on the side of caution, especially when you don't have all the facts in front of you.