Doubt Gmail dots

All of us know of Gmail dots as a feature which helps us creating multiple pseudo gmail ids for fun, for security, for avoidance of Spam. But for last few days (to be precise, 5 days), my gmail id is giving trouble.

Has anyone seen such type of a message box while emailing??? Ofcourse, hats off to Google to have even thought of a scenario when its From: address was in doubt. But why suddenly it started giving this trouble no idea.

Plus, while loading one particular gmail id (not all gmail ids, only this ONE), it is getting stuck at the Loading Page with Done status. After changing http:// to https://, it is going through. For other mail ids, it is automatically adding the S-part of the secure SSL, but not for this mail id. I thought may be because of the option under Settings 'Always Use https' or 'Dont always use https'. But not finding any difference with change in these options...any views?

Update 1: Observed that in Google Chrome, even with http:// Gmail is loading completely, whereas it was not in Firefox. Still it does solve the mystery why it was happening for one gmail and not for any other gmail id. Though today, it has loaded properly, completely, do not know when again it might crop up unless the bug is fixed.