Thanks! I searched CPAN and im sure it was not there 2 hours ago ;-) Ill check it out, results will be posted here!

Result:

Pots::SharedObject did'nt help much here, because it shares all instances of a class and the thing i really don't like is that you have to modify the class and it's constructor to make it work.
I guess i'll better wait until Perl is ready for "my $obj : shared = new My::Class;" because that's the way it has to be.