Wireless trackpad not working after lion update on May 15, 2012

Right after OSX update on May 15, 2012, the pairing of my wireless trackpad to the desktop is no longer working.
First the bluetooth found my trackpad.  After clicking "continue", the box showed: "No trackpad found  The pariing attempt was unsuccessful, click "continue" to try again. 
I've been trying for several times.  Still not working!!

Yes, I did replaced a new set of batteries!!  The computer keeps finding new wireless trackpad but once I click on continue, the box showed "the pairing was unsuccessful".  Again, this happend when I updated my OSX this morning.
I clicked on the bluetooth set up box.  It shows a green light (connected) but sometimes turned red (disconnected) for no reason.  Then I clicked on "Monitor connection RSSI.  As I played with the trackpad, there seemed to be signals being detected by the desktop.
Still, the mouse cursor cannot be moved by the wireless trackpad and the pairing is still unsuccessful.
JyhMin

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