ThankU for the replies.
1.But sometimes reporting and getting the false positives fixed might take some time. A feature to add an exception will be welcome. Since always the file guard is active which would prevent any infection. Preventive (not confirmed) actions should always have some leeway.

  1. What if I do not mind that repeated popups. I would tell the browser to stay away from the site. Imagine if someone missed that alert , he would not have a clue as to why the site is not opening up. In matters as this it is the user who needs to be informed properly. You cannot generalise a single popup behavior to some weird browsers. No standard browsers like IE , Firefox or chrome repeatedly tries for any site connection.