I checked this out at my browser "zoo" of 9 browsers and found 3
browsers that return ;SP2; when asked for navigator.appMinorVersion.
However the other 7 did not. Since the SP2 update apparently makes
changes both in the XP OS and IE6 browsers and relatves thereof, this
response of browsers is no surprise. IE6, MSN9, and MYIE2 0.9.27.68
return ;SP2; . Opera 7.54 just gives a blank space. Mozilla 1.7.3,
Netscape 7.2, Firefox 1.0 Preview Release, and Netscape 4.8 return
undefined. Amaya 8.16 does not have JS installed. The old MSNTV
browsers, soon to be replaced by a IE6 browser on a new set top box
just being released, return numbers for various version revisions, but
no letters. It is possible that some AOL browsers could return ;SP2;
since some of these are based on IE6, but AOL greatly modifes the
browser. I have no way to check various AOL browser versions.