You wrote about duplicate entries, but every entry from your grub.cfg is unique:
Ubuntu, with Linux 3.0.0-12-generic
Ubuntu, with Linux 3.0.0-12-generic (recovery mode)
Previous Linux versions
-> Ubuntu, with Linux 2.6.38-11-generic
-> Ubuntu, with Linux 2.6.38-11-generic (recovery mode)
-> Ubuntu, with Linux 2.6.32-33-generic
-> Ubuntu, with Linux 2.6.32-33-generic (recovery mode)
[memtest and windows follows]
Do you see something differnt, when starting your PC?
You wrote about duplicate entries, but every entry from your grub.cfg is unique:
Ubuntu, with Linux 3.0.0-12-generic
Ubuntu, with Linux 3.0.0-12-generic (recovery mode)
Previous Linux versions
-> Ubuntu, with Linux 2.6.38-11-generic
-> Ubuntu, with Linux 2.6.38-11-generic (recovery mode)
-> Ubuntu, with Linux 2.6.32-33-generic
-> Ubuntu, with Linux 2.6.32-33-generic (recovery mode)
[memtest and windows follows]
Do you see something differnt, when starting your PC?