Database size grows 50-100% when replicating from W2000 to SUSE Linux

When I replicate mail databases from a Domino 6.0.3 server on W2000 to a Domino 6.0.3 server on SUSE Linux 8.2, I got the strange phenomenon that all mail files grow i size. For example, a mail file that were 6gb on the W2000 server, now turns out to be 9.5gb. The databases have the same number of documents, so there’s nothing wrong with the actual replication.

Anyone have an idea on what might be causing this growth?

Subject: Database size grows 50-100% when replicating from W2000 to SUSE Linux…

I might add that the size of the database corrects itself after compacting - but why did the database turn out so big in the first place?