The second box partly overlaps the first one thanks to a negative margin-top, and contains an anchor with a hover effect. Both boxes have hasLayout. In IE7b2p build 5296 after the hover the first box is redrawn over the second one. Position:relative on the second box fixes the problem.
Now the second box has hasLayout=false. It is always covered by the first one (even without hover, which has no effect.) Position:relative fixes the problem again.
Both problems are fixed in IE7b2p build 5335, but there is still a similar problem.
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