I'm all in favor of x86_64, but as proven by one of dev blogs (no longer available) for a facebook-ish website using custom python code, it doesn't necessarily bring speedups/advantages everywhere. Their point was that python uses *a lot* of pointers. Tests showed, that even though switching to 64 bits brought some really minor improvements, it also brought much more memory usage to their servers, effectively worsening their performance. They've stayed with x86. They conducted tests some 2 or 3 years ago, I wonder what would be the result today?

Adobe released their new flash version to fit in ie9 nicely. There is also native 64-bit version for all three platforms. Betanews article on this: http://www.betanews.com/article/Adobe-launches-Square-Flash-Player-preview-adds-IE9-64bit-OS-support and download site: http://labs.adobe.com/downloads/flashplayer10.html

Doesn't it have two separate cores? One 67.028 MHz ARM946E-S and one 33.514 MHz ARM7TDMI

Microsoft is letting you download virtual PC images of XP SP2, SP3 and Vista (presumably SP1) with IE6, IE7 and IE8 RC1 free of charge. It's called "Internet Explorer Application Compatibility VPC Image". They have a set expiry date, but at this time you should be able to download updated version. http://www.microsoft.com/Downloads/details.aspx?FamilyID=21eabb90-958f-4b64-b5f1-73d0a413c8ef&displaylang=en