tokyocabinet build isn't configured with --enable-off64 on x86. This leads to unrecoverable corruption as soon as a Btree DB (and probably other types of DB) reaches 2GB. Reproducible: Always Steps to Reproduce: Simply adding --enable-off64 to the econf line in the ebuild solved this problem on my test system.
+ 03 May 2010; Patrick Lauer <patrick@gentoo.org> + tokyocabinet-1.4.44.ebuild: + Fixing configure for #314743