Same issue with a Vostro 1710. The keyboard and mouse are locked at login prompt. It stopped working in Ubuntu 8.10. I thought the problem would be solved with Ubuntu 9.04 but it was the same. It only worked once, after the install. It stopped working at the next reboot.
I cannot use Ubuntu because of this bug. It is really horrible...
Same issue with a Vostro 1710. The keyboard and mouse are locked at login prompt. It stopped working in Ubuntu 8.10. I thought the problem would be solved with Ubuntu 9.04 but it was the same. It only worked once, after the install. It stopped working at the next reboot.
I cannot use Ubuntu because of this bug. It is really horrible...