Why is Internet Explorer 7 is so slow?

Why does my favicon look terrible in Internet Explorer 7?

• I have a 32x32 favicon (in .ico format) that shows up fine in Firefox 3.6.12 and Chrome 5.0.375.70. But in Internet Explorer 7.0.5730.13 it looks terrible. It also looks bad in Windows Explorer (XP). (Hmmm, I can't upload it - perhaps .ico format is blocked?) (It's not IE8 but there is no other tag)

• Answer:

  It turns out that the solution, at least in my case, is to save in 32x32 .ico format but with the transparency turned off. In addition - when I use this in MediaWiki it only goes wrong using the default name: favicon.ico. When I use a non default name, the problem goes away! In Local Settings.php: $wgFavicon = '<name>.ico';