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Forgot to mention I tried this out as well and it did not work for me either.
Here's a thread on this problem in the BF3 forum
http://forums.electronicarts.co.uk/battlefield-3-pc/1430026-battlefield-3-beta-not-working-after-install-3.html --- "planetside 2 would only have 30 people running around on a small map fighting." - GunWolfAlpha
Also, forgot to mention When I installed in safe mode I also used the the zip formed of the client, not downloading it from the site.
Extract these files into the beta folder when its done downloading while in safe mode. --- Those who would give up Liberty to purchase Safety, deserve neither. http://i41.photobucket.com/albums/e261/aulliax/kitten1.jpg
In case this problem is still lingering- the fix for me was to update windows completely, including windows internet explorer 9. I am still using Chrome as my default browser and it works just fine. I don't think you have make IE9 your default browser. Just update windows all the way up to date, then try.