USB Port speeds

[James Finnall <James@Finnall.net>]

Hello All,

I have uBuntu systems and running 3.2 kernel.  I also use K3B software 
version 2.0.2.  The DVD drive I am using is Pioneer BDR-208D in a USB 
2.0 enclosure.

When I burn a DVD+R I can get 14222 KB/s throughput rates and a DVD 
burns and verifies OK.  When I burn a BD-RE at 2x speed it takes forever 
and forever with a throughput speed of 2224 KB/s!!  The software 
percentage stays at 100% solid the whole time. The drive buffer 
fluctuates greatly.  It appears the data is not going through the USB 
port fast enough.  However, it is exactly the same hardware as used to 
burn the DVD without any changes except the media.

Any thoughts or suggestions as to how to get the performance to be at 
least as good as the DVD on the BD-RE medium?

Thanks,
James