“Mac users still on Mac OS X 10.4 (Tiger) systems should be aware that there are no further security or system patches planned for these systems.” Source: www.9to5mac.com
I have a RAD TECH mouse that works fine on my iBook. But still miss the ease of track pad while in truck/airport/etc.
There were so many complaints about the track pads on Apple iBooks that company should have recalled/replaced free of charge.
That's not confirmed by Apple. Apple has not officially stopped support for Tiger and as of November still issued security updates for Safari for Tiger. . . so until Apple says there will be no more support, or until five years since intro, I wouldn't worry too much.