PLS help installation ubuntu 9.10

[geri1994]

i has XP and i downloaded ubuntu 9.10 i burn in cd
and i boot my pc with ubuntu cd
i chose isntall and it shows this [IMG]http://www.suryaden.com/images/karmicbetainstall/ubuntu-beta-install-2.jpg[IMG] and then it shows authentication failed .

[geri1994]

PLS Help mee urgentt :S

[taurus]

Did you do the checksum of the ISO image before you burnt it?

Did you burn it at a slow speed like 4x?

Did you run the check cd for defects option at the initial screen?

[geri1994]

thank you i burn my iso with 24X speed and it dont work then i install ubuntu 9.04 and upgrade to 9.10