Problem with PECL Stats package

I've just installed the pecl stats package on my ubuntu server in order to use the stats_rand_gen_beta function in my webapp. Whenever I try to run the function though I get the following error : INITGN called before random number generator initialized -- abort! Ive done some searching online and can find nothing relating to this error, and so am stumped. Any ideas on how i can resolve this problem would be greatly appreciated. regards Andrew