Today I used Gmail as usually, but when I clicked the send button, I got the following alert,

Did you mean to attach files
You wrote "I have attached" in your message, but there are no files attached, Send anyway?

It is really an interesting thing, Gmail can auto check my email, and prevent me from forgetting the attachment.

Last Month, I got USD115.90 from Google Adsense, It’s a great news for me, because it is the first month my Google Adsense revenue is over USD100.

BTW, I bought the domain rubypdf.com on Sept 17th, 2006(I just notice it is a very special day, because my son was born on Sept 17th, 2007) from Dreamhost, I used WordPress to build my blog, then applied Google Adsense. after 8 months I got my first and the last check(because Google used Western Union Quick Cash from my second payment), USD113.4, I have forgotten if I have taken a shot of that check or not.

I do not know what’s wrong with my Google Chrome Frame, when I tried to sign in one of my Gmail account(another account does has this problem), I always got the alert as the following screen shot.

and when I click OK, I got sign out.

Alert https://mail.google.com
You have been signed out this account.
This may have happened automatically because another user signed in from the same browser. To continue using this accout, you will need to sign in again.
This is done to protect your account and to ensure the privacy of your information.

I am sure I have signed out another account and try this account again and again, but without any success.