incorrect kernel loaded by GRUB

incorrect kernel loaded by GRUB

Installed (several attempts) 13.04 via the live USB, then GRUB loads an
old kernel (3.2.0-51) instead of the apparently installed 3.8.0-19-generic
uname -r gives 3.2.0 modules and vmlinuz all are 3.8.0 (correct)
I think I ca't get GRUB to install the 3.8.0 kernel, but I tried various
options (create new initramfs, grub-update) without luck.
Any thoughts?
thanks!
lsb_release -a:
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 13.04
Release: 13.04
Codename: Raring
dpkg -l linux-image* | grep ^i:
ii linux-image-3.8.0-19-generic 3.8.0.-19.29
amd64 linux kernel image for version 3.8.0 on 64bit x86 SMP
ii linux-image-extra-3.8.0-19-generic 3.8.0.-19.29
amd64 linux kernel image for version 3.8.0 on 64bit x86 SMP
ii linux-image-generic 3.8.0.19.35
amd64 Generic linux kernel image
sudo os-prober:
/dev/sda:Windows 7 (loader):Windows:chain