Oh please....... asking so much out of DS's 2 little ARM proccessors. It's a miracle that Opera managed to squeeze the desktop version of its browser (Japanese version - ver.8.5 ). Flash? Video Streaming? Java? These things are not meant for mobile browser anyway. Can you imagine watching YouTube video on your DS screen?

And video pages have large files (FLV or SWF alike) that can make you see the dreaded low memory screen.
Most wireless router supports B and G wireless so it's not even an issue. But the DS is known for its (very) short reception range. I can use the browser on most Starbucks (except the ones that uses Airzed which requires you to get the codes from SB staff).
Speed......yes it's slow if you try to open pages with heavy customization. But it managed to finish loading
Serebii.net in 4-5 seconds, including images.
The lack of AJAX support means that or those
Web 2.0 stuff won't work on the DS browser. For example no Gmail Talk (you'll view it in basic HTML version, but it's not bad and very fast to boot), Google reader, changing settings in Blogger, etc.
It's you surfing habbit that will decide whether you need the DS browser or otherwise. It's very handy if you just want to check emails, visiting blogs, or even filling up the Kopitiam with your spam.

Added on June 21, 2007, 10:00 amBTW! If you can attend the meetup this Saturday I'll be glad to show you how it works.
This post has been edited by Pr1me_Minister: Jun 21 2007, 10:00 AM