The in-browser setup pages for the E3000 include no place to disable (or enable) the Guest account. And Cisco Connect does not run at all under OS X 10.9.
Is there some other way?
Note that I do not have any access to a PC running Windows.
I do, however, have a Windows 7 (and a Windows 8) virtual machine on my Mac inside the latest Parallels Desktop for Mac (under OS X 10.9). I've tried running Cisco Connect from that Windows 7 virtual machine, but it chokes at 25% of the way in the setup -- at the step "Connecting to the network". Is there anything I can do to fix that, e.g., with Parallels device settings?