The biggest problem with IE6 that I see with my company, is that a lot of corporate clients still have IE6 on their machines because of their lazy IT departments. So they don't care if only 0.0000000000001% of the traffic is from IE6 because it happens to be them.
There are also apps that rely on IE6 and simply do not work properly in IE7 nor IE8. These apps would also have to be updated which, with tight purse strings in some companies, is not bound to happen soon.
We had this problem with publishers sticking with OS9 and Quark 4 a few years back: that kept them on Mac IE5. In the end we told that that while the admin system would continue to work in Mac IE5 the front end would not be viewable. Didn’t go down too well, but it simply wasn’t possible to provide the layouts they wanted in a format that worked with that browser.
Yep! Started a new job on Monday with a fresh install of IE 6. I couldn't believe it, I'm now working at one of the companies where ie6 is forced upon all staff, even the web dev team. I complained that the majority of users are using a newer browser, and I was told that IE7 is currently being beta tested. I'm not holding my breath.