samba - Sep 2004 - Weird thing with Samba and Final Cut Pro

Does anybody have a clue why, when I access my Linux Samba server from a Mac 
G5 (OS X 10.3.x) and try to capture digital video files, the Apple Final Cut 
application -- in allocating disk space for the file it's about to capture
--
actually writes to the hard drive for a long time (presumably writing zeros) 
until it has created a file the very size of what it expects to store on the 
Samba server. This process basically occurs in real time. If I expect to capture
a 30 minute file, the process takes about 30 minutes before capturing actually 
begins. 

When I access the same Linux server with Apple File Sharing/Netatalk, the 
disk space is allocated instantly and capturing begins right away. 

Could there be anything to configure in Samba that would make it behave more 
like Netatalk in this regard? 

Andy Liebman