Time to change tp Ubuntu? (Was USB/XFS/64bit/SuSE/Thinkpad problem)

Hi everybody.

Maybe after using SuSE since version 4... it is time to change to 
(K)Ubuntu.

Has someone read about my performance problems with 
USB/XFS/64bit/SuSE-10.2?

Hmm, what can i say? Kubuntu is faster loaded from CD as SuSE started 
from HD accessing my S-ATA-Disk.

Maybe ;-) it is a DMA problem, because SuSE says:

+++snip+++
ata1: SATA max UDMA/133 cmd 0xFFFFC20000032500 ctl 0x0 bmdma 0x0 irq 66
ata2: SATA max UDMA/133 cmd 0xFFFFC20000032580 ctl 0x0 bmdma 0x0 irq 66
ata3: SATA max UDMA/133 cmd 0xFFFFC20000032600 ctl 0x0 bmdma 0x0 irq 66
ata4: SATA max UDMA/133 cmd 0xFFFFC20000032680 ctl 0x0 bmdma 0x0 irq 66

+++snip+++

But Kubuntu says:

+++snip+++
[   59.529889] ata1: SATA max UDMA/133 cmd 0xffffc20000044500 ctl 
0x0000000000000000 bmdma 0x0000000000000000 irq 16
[   59.529969] ata2: SATA max UDMA/133 cmd 0xffffc20000044580 ctl 
0x0000000000000000 bmdma 0x0000000000000000 irq 16
[   59.530050] ata3: SATA max UDMA/133 cmd 0xffffc20000044600 ctl 
0x0000000000000000 bmdma 0x0000000000000000 irq 16
[   59.530128] ata4: SATA max UDMA/133 cmd 0xffffc20000044680 ctl 
0x0000000000000000 bmdma 0x0000000000000000 irq 16
+++snip+++

What means bmdma and ctl? Why is it 0x0 on SuSE? Why another IRQ?

Can someone help? I want really keep SuSE! ;-)