Annoyingly, the jump to 9.X threw a wrench in my video drivers, and the setting software was cranky.
In the proces of trying to correct a minor glitch (that made Second Life almost unusable), I've once again completely cocked up my two-monitor browser settings. The second monitor refuses to set itself at the proper 1440x900 resolution -- it's turned into a 1024x768 monitor PANNING ACROSS a 1440x900 virtual screen.
That's worse than useless.
Once again, the only hints of help I can find online involve hand-editing the appropriate config files; meanwhile, finding useful information about just how to DO that elude me.
So, to hell with it. I'll just use one monitor, like everyone else does.
Ironically, I've got the replacement Eee working just fine under Eeebuntu.