I've been using IE7 RC1 since it was released. It blows up at least once, twice, thrice a day when closing it while multiple tabs are open.
That's not too big of a deal for me, because I love them tabs. But I hope they take care of this problem before the official release.
And just so you know...after set up, I did allow Microsoft to receive my usage information and I do let it submit error information when the crashes occur.
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Sean Winstead
Tags: ie7, internetexplorer, microsoft