Sometime in the last year, ownership of the bignum distro changed hands from FLORA to PJACKLAM. On CPAN, FLORA's last release (bignum-0.32) is still present along with PKACJLAM's new one (bignum-0.37).
However: $ zgrep bignum mirror/modules/02packages.details.txt.gz bigint 0.32 F/FL/FLORA/bignum-0.32.tar.gz bignum 0.32 F/FL/FLORA/bignum-0.32.tar.gz bigrat 0.32 F/FL/FLORA/bignum-0.32.tar.gz Math::BigFloat::Trace 0.36 P/PJ/PJACKLAM/bignum-0.37.tar.gz Math::BigInt::Trace 0.36 P/PJ/PJACKLAM/bignum-0.37.tar.gz All 3 of the big* modules are indexed to the older FLORA release, not the newer PJACKLAM release. Is this a problem in the package index generation, or perhaps a problem with the metadata in the bignum distros? It's odd to me because clearly the newer distro is being scanned, but it's only picking up the Math::* modules, and not the big* modules.