Another update ( "mia8-dev" ):
- Added "--quet" argument to "mkfs.jfs", which prevents it from hanging when formating partitions which allready have an FS ( otherwise mkfs would ask for confirmation, which cannot be provided through installer ).
-
Fixed mount options for all FS's, so no more failed mounting ( btrfs, jfs and xfs in particullar ).
So, right now all supported file systems ( exluding ntfs, fat & hfs+ ) are fully usable for a root partition ( both formating and mounting ).

Upgrade is strongly recommended for anyone planning to use btrfs, jfs or xfs for root ( otherwise, no rush ).

@filip, love your avatar!!! 
Thanks jedi!
