Same problem here... RK3's and K4's are locking up at various installs. We are making heavy use of the internet explorer object, so maybe something is leaking there, but we've also seen it hang on pages without web objects.

We're now rebooting CB4's nightly to reset all of the panels and are providing clients with manual power switches for everything to reboot on their own.

You guys think this has something to do with the date? Hope there is a fix soon.