Ubuntu Installation :: OS-prober: Cannot Access /var/lib/os-prober/mount/boot (different)

I know there are already a lot of these posted. I've been reading them. The solutions posted have not worked for me. Well, OK, I haven't tried the 'reinstall GRUB 2' nuclear option. But, really. Like most, what I have is a computer (netbook really) running Win7 starter that I have installed Kubuntu 10.10 32 bit in a partition (sda7). Unlike most of the other complainants, GRUB shows me the Win7 partition just fine. Everything works. So, all I really want to do is (1) give me more than 10 seconds to respond to the GRUB menu and (2) perhaps change from default Kubuntu to Default Windows. Actually, one of the edit entries I found indicated that GRUB should be able to remember which I booted to last and default to that, which would be kind of nice. Or even set the timeout to -1 so it always waits for me.

Anyhow, since I cannot get sudo update-grub to work, all of this is moot. Everything seems to work until the end of the script where I get the dreaded "OS-prober: cannot access /var/lib/os-prober/mount/boot" message and GRUB's operation doesn't change. So, the reason I'm posting is that every other thread I've read devolves into people saying that the SYSTEM partition has two folders /boot and /Boot and get rid of the /boot. And this seems to work for many people ... but ... in my SYSTEM partition (sda2, the 100MB windows boot partition) there is only /Boot. There is not, I repeat and emphasize NOT a /boot folder. Yes, I'm looking at it with administrator privileges. I use Krusader - root mode and show hidden files is turned on. Yes, I installed BURG. It works fine but doesn't help my issues (although the brightly colored boot screen does catch my attention faster). And I had the OS-prober problem before BURG.