Curl needs to be recompiled with the new locations of the certificates. A quick glance at the PKGBUILD shows me that the compile flag --with-ca-bundle is set to /etc/ssl/certs/ca-certificates.crt, while as of the last update (20140923-2 in testing), this location does not seem to exist any more. This throws up errors while running the AUR manager cower, which complains of a non-existent path. ABS has similar problems. -- Cheers!