It would be nice to have m2crypto version 0.18 in Portage, since this version fixes some problems in 64-bit environments (I was experiencing problems with RSA signatures, that failed to validate in 0.17 on amd64 but work in 0.18). Just renaming the old ebuild to m2crypto-0.18.ebuild seems to work. Reproducible: Always
0.18 is in CVS, thanks for reporting ;)