This excerpt taken from the PLXT DEF 14A filed Apr 18, 2006.
Amendment and Termination
The Board of Directors may at any time amend, suspend or terminate the 1999 Plan. To the extent necessary to comply with applicable provisions of federal securities laws, state corporate and securities laws, the Code, the rules of any applicable stock exchange or national market system, and the rules of any foreign jurisdiction applicable to Awards granted to residents therein, the Company will obtain stockholder approval of any amendment to the 1999 Plan in such a manner and to such a degree as required. The 1999 Plan will terminate in January 2009 unless previously terminated by the Board of Directors.