Some USB functions have become inoperable

My wife has an AlPB 1.67. She was using an external USB keyboard and mouse. Suddenly, these have become inoperable. They both work with other computers, so they are ok.
I can connect a USB iPod and that works.
I've done an Erase and Install, and still they don't work.
Any ideas would be most welcomed. An Open Firmware reset?
Thanks in advance
David

When there's an issue with the USB port(s), often a power management unit (PMU) reset will fix it. See the Apple note at http://docs.info.apple.com/article.html?artnum=14449 . If that doesn't do it, a PRAM reset may, see http://docs.info.apple.com/article.html?artnum=2238

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