Unfortunately its the abuse of the lack of standards in IE6 that has caused the SOE lock-ins, because the uber-critical software is exploiting a DOM flaw or something that no longer works in IE7.
It's still ~30% of our IE user base on AG, which is around 45% of our browser total (Firefox is now 0.10% behind IE!)
That's similar to the stuff on the W3C site trog, which is about right for tech-sites where users are more open to embrace a third-party browser. Browser stats on a broader level (like the government site I mention above) have FF at something 20-30, with 10% for random browsers and the rest to IE, still about 60%.
Makes it harder to scrap IE6 for a more general-public web application.
I'll dig up the stats in the morning.last edited by Hogfather at 18:19:19 13/Nov/08