ibook system bus speed

[Christophe Branchereau <chris.branch@gmx.de>]

Hello.

I own an ibook clamshell special edition 366 MHz, running sarge and a
2.6.8 kernel since a long time now.

Today, I noticed by paying attention to dmesg this message:

ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx

A quick look on google told me that the system bus speed of this model is 66MHz, as
http://www.apple-history.com specifies.

Isn't it degrading disk performances a lot?
As the dma mode that was set to 16 Bits by default, for example.

Before doing (maybe?) something stupid, I'd like to know if someone knows better
than I do, any more infos would be welcome.

Christophe
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