BeforeNavigate2 event

I have been hooking into the beforenavigate2 event and am noticing some
weird behavior on some web pages and was hoping someone could provide some
explanation.

If I browse to a website such as www.msn.com, and put a breakpoint in the
beforenav event, the event fires approx 4-5 times for every nav to that
page. If I look at the 'url' param for the event for each call it is:

call1: www.msn.com
call2: about:blank
call3: about:blank
call4: about:blank
call5: about:blank

once the call stops www.msn.com is sure enough there.

Lastly, if I do the same in OnDocumentComplete, the url is always
www.msn.com, that event too fires 4 or 5 times.

Any insight given greatly appreciated.
James


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