Suspicious sign in prevented - Is Google mistaken?

Received two of these from Google:

Someone recently tried to use an application to sign in to your Google Account.

We prevented the sign-in attempt in case this was a hijacker trying to access your account. Please review the details of the sign-in attempt

<My own ip address>

Along with a sms.

I'm not the only one getting this. A friend of mine got it a few minutes before I did. The ip was from Azerbaijan.

Have you been getting this too?