Don't know, if this has been observed by anybody else. Just wanted to let everybody know, that jQuery.browser.version returns 6 as version in IE7. This might have to do with a changed appVersion or user agent string. Mine are (in IE7):
appVersion: 4.0 (compatible; MSIE 7.0; Windows NT 5.1; Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30) userAgent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30) See the "MSIE 6.0" in both strings.