Cracked Quartz

On my G3 iBook and iMac, the new OS X 10.2 is having some real rendering problems in Internet Explorer. Words appear and disappear, especially with cursor movement and selection. Some words turn into greeking (little vertical lines that look like type from a distance) when scrolling or mousing. I tried turning Quartz Smoothing off in IE, tried using a Mozilla OS X browser, tried changing the settings in General for text smoothing, all to no avail. This was never a problem with 10.1, so I'm assuming it's a 10.2 Quartz error. It's frustrating. (I've even reinstalled Internet Explorer 5.2.1.) Here's a 500K QuickTime movie of the problem.