On rebooting another time, and logging in, the screen came up 'properly' in 1600x1200 mode, with the top panel showing correctly. I've attached Xorg.0.log3 after that.
On rebooting another time, and logging in, the screen came up 'properly' in 1600x1200 mode, with the top panel showing correctly. I've attached Xorg.0.log3 after that.