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Researchers develop a "scent device" they hope may prove to be a reliable way to detect cancer in patients' urine before it becomes a serious problem.
Internal speakers are fine, USB speakers fail.
A series of workarounds, organized by increasing severity.
Almost too simple...
Summary of earlier suggestions, along with a new one: try USB Prober.
Along with a reminder about suggested fixes.
Mac OS X 10.4.10 Special Report: USB issues (serious), fixes
LED lamp hangs from your ear
Race for all-in-one handheld continues
Mac OS X 10.4.7 Special Report: Trackpad difficulties -- input not recognized