Problems with updated kernel [OldWorld]

[Andrew]

 I've installed the available yum updates and I am very pleased so
far as the system fell 'faster' and more responsive compared to 2.6.8
and 2.6.9. (Responsiveness is ranked very high on my OS-o-meter
appreciation list) Good job ;)

 I have spotted a couple [minor] issues so far. Perfection is just a
dream after all. One is about atyfb and the other about the bmac
ethernet adapter.

1- Thus X11 is working super fine, there is a bad bug in the consoles.
 The screen show a pair of distorted column. The letters are 'buzzing'
 The first (left most) column is located on 'n)' of 
 'Yellow Dog Linux 4.0 (orion)' and the second is located 10 letters
 to the right. tty1 does print debug stuffs:

debug atyfb: Mach64 non-shadow register values:
debug atyfb: 0x2000:  007F00A3 002C0083 02FF031F 00230300
debug atyfb: 0x2010:  023C0000 20000000 00000002 0B000200
debug atyfb: 0x2020:  00280919 02C00679 00000000 92100000
debug atyfb: 0x2030:  00000000 00000031 00000000 00000000
debug atyfb: 0x2040:  00000000 00000000 00000000 00000000
debug atyfb: 0x2050:  00000000 00000000 00000000 00000000
debug atyfb: 0x2060:  00000000 AAAAAA0F 000BFE00 02F00000
debug atyfb: 0x2070:  00300000 00000000 00003720 00000040
debug atyfb: 0x2080:  00000000 00000000 00000000 00000000
debug atyfb: 0x2090:  00A63003 00000000 00000000 00000000
debug atyfb: 0x20A0:  7B23A050 00000000 00000000 25010001
debug atyfb: 0x20B0:  004215B9 00010000 00010000 00000000
debug atyfb: 0x20C0:  00FF0010 86010182 00000000 00000000
debug atyfb: 0x20D0:  00000100 00000000 00000000 00002082
debug atyfb: 0x20E0:  9A004754 0000001D 00000000 00000000
debug atyfb: 0x20F0:  00000000 00000018 800004F8 00000000

debug atyfb: Mach64 PLL register values:
debug atyfb: 0x00:  ADD52414 A80341B5 8E82C501 A61B0000
debug atyfb: 0x10:  ADD52414 A80341B5 8E82C501 A61B0000
debug atyfb: 0x20:  ADD52414 A80341B5 8E82C501 A61B0000
debug atyfb: 0x30:  ADD52414 A80341B5 8E82C501 A61B0000

 My first guess is that i should set another driver than 'atyfb'
 in bootx. Im not sure the one I should use. Suggestions?

NOTE: I've set XF86Config to use 'mach64_accel' and its fine.

2- bmac ethernet card. I just had to do /sbin/modprobe bmac' then
activate the eth0 interface the usual way. I wrote a shell script that
does just that for me with a single command input.