Another reason to not use ClarkConnect. It has a max file size of 16GB. Which translates into a 1096 byte block size.
Mandriva, on the other hand, uses a 4096 byte block size, which translates into a max file size of 2TB, and a max filesystem size of 16TB.
HD movies, especially while processing, can be much larger than 16GB.
To find the block size on an ext3 system: /sbin/dumpe2fs /dev/sda6