Another HTML bug in IE

I have been impressed that bugs that I find in Yahoo are generally fixed in a few weeks. Bugs in Microsoft products can remain for years unless they become a major security threat. In fact some developers depend on bugs not being fixed in implementing strange code fixes. I wonder if we can expect an end to fixes if Yahoo merges with Microsoft? I was going to describe the HTML bug here, but after giving it some thought I realized it possibly is a major security threat. I also think it may be on purpose to stop a different security threat. There is a major memory leak, which has me removing this HTML tag from all my code. So I should be busy today.