10.4.9 Update issue with USB device

[steve harley]

they whom i call wdk wrote:
> After updating the OS to 10.4.9 my iriver e10 won't apppear on the desktop or
> in the toolbar.  
> Its recognised in the system profiler, its just i can't access it. 

there are many reports of USB problems with that update; i can't 
confirm it from personal experience, but some say  that 
downloading and installing the combo updater may fix this problem 
(as opposed to the auto-update from 10.4.8 to 10.4.9)