If you have an HP NetServer6000r or similar and experience these messages:

megaraid: Aborting-1 cmd=12
megaraid: Aborting-1[7d], fw owner.


Go into the NetRAID configuration (Ctrl-M in the boot screen) and turning
off "I2O" in the adapter "Objects".
This solved the problem with all kernels -- for some reason the installer
for 4.0r1 is not affected, but after booting after install hangs if I2O is
enabled.

Next is the lspci -nn requested by Franz Pop:

00:00.0 Host bridge [0600]: Broadcom CNB20HE Host Bridge [1166:0008] (rev
21)
00:00.1 Host bridge [0600]: Broadcom CNB20HE Host Bridge [1166:0008] (rev
01)
00:00.2 Host bridge [0600]: Broadcom CNB20HE Host Bridge [1166:0006]
00:00.3 Host bridge [0600]: Broadcom CNB20HE Host Bridge [1166:0006]
00:06.0 Ethernet controller [0200]: Intel Corporation 82557/8/9 [Ethernet
Pro 100] [8086:1229] (rev 08)
00:07.0 VGA compatible controller [0300]: ATI Technologies Inc 3D Rage IIC
[1002:4759] (rev 7a)
00:0f.0 ISA bridge [0601]: Broadcom OSB4 South Bridge [1166:0200] (rev 4f)
00:0f.1 IDE interface [0101]: Broadcom OSB4 IDE Controller [1166:0211]
04:02.0 System peripheral [0880]: Hewlett-Packard Company NetServer PCI
Hot-Plug Controller [103c:1219] (rev 0d)
04:02.1 InfiniBand [0c06]: Hewlett-Packard Company NetServer SMIC Controller
[103c:121a] (rev 09)
04:03.0 PCI bridge [0604]: Intel Corporation 80960RP [i960 RP
Microprocessor/Bridge] [8086:0964] (rev 01)
04:03.1 RAID bus controller [0104]: Intel Corporation 80960RP [i960RP
Microprocessor] [8086:1960] (rev 01)
04:04.0 PCI bridge [0604]: Intel Corporation 80960RP [i960 RP
Microprocessor/Bridge] [8086:0960] (rev 05)
04:04.1 SCSI storage controller [0100]: Intel Corporation 80960RP [i960RP
Microprocessor] [8086:1960] (rev 05)
05:02.0 PCI bridge [0604]: Digital Equipment Corporation DECchip 21152
[1011:0024] (rev 03)
05:03.0 PCI bridge [0604]: Digital Equipment Corporation DECchip 21152
[1011:0024] (rev 03)
05:08.0 System peripheral [0880]: Hewlett-Packard Company NetServer Smart
IRQ Router [103c:10c1] (rev a0)
06:04.0 Ethernet controller [0200]: Intel Corporation 82557/8/9 [Ethernet
Pro 100] [8086:1229] (rev 05)
06:05.0 Ethernet controller [0200]: Intel Corporation 82557/8/9 [Ethernet
Pro 100] [8086:1229] (rev 05)
07:04.0 Ethernet controller [0200]: Intel Corporation 82557/8/9 [Ethernet
Pro 100] [8086:1229] (rev 05)
07:05.0 Ethernet controller [0200]: Intel Corporation 82557/8/9 [Ethernet
Pro 100] [8086:1229] (rev 05)

Hope this helps someone.