ms ie 6, headache for developers

6 Reasons Why IE6 Must Die

[my italic]
Internet Explorer 6, released on August 27, 2001, was a package of problems right from the start. Within a year of release, Microsoft silently declared that IE6 would not make enough money for them to support as closely as a browser should supported. The result has been numerous security problems, unfixed browser bugs, and a daily migraine for developers.
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Lack of PNG Transparency Support
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CSS Float + Margin / Padding Issues
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Lack of CSS Pseudo-Class & Pseudo-Element Support
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No Min-Height CSS Support
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CSS Anchor Background Image Flicker
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Crashing With Code