In case you intend to send frozen data between machines, here are two details I've run into. Both of these have caused silent and/or strangely located failures in the past.

Use nfreeze(), not freeze(). Otherwise you may run into problems if both machines don't agree on a byte order.

Data frozen with one version of Storable may not thaw properly with another. Be sure both ends are running identical versions.

-- Rocco Caputo / poe.perl.org / poe.sf.net