found the problem but don't know how to solve it.

it seams that when you use bignum library under CentOS and set accuracy to 300 everything blocks.

use bignum accuracy => 300;
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if a omit the accuracy everything is working. What should i do? (except omitting the accuracy set - i need that to be set to 300 !!!)

However this is working

perl -Mbignum=a,50 -le 'print sqrt(20)'
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but this blocks the script if it is used within a module

use bignum accuracy => 50;

print sqrt(20);
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Oh and my OS

CentOS release 5.6 (Final)
cat /proc/version
Linux version 2.6.18-238.19.1.el5 (mockbuild@builder10.centos.org) (gc
+c version 4.1.2 20080704 (Red Hat 4.1.2-50)) #1 SMP Fri Jul 15 07:31:
+24 EDT 2011
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