regular xrun on ardour 2.8.7 ubuntu 8.04 64 bit
i have regular xrun on my computer when i use ardour. I think it's a problem on my hard disk (i use a western digital velociraptor)... when i do "lspci -v" i have this (the bios configure in raid):
00:1f.2 RAID bus controller: Intel Corporation 82801 SATA RAID Controller
Subsystem: ASUSTeK Computer Inc. Unknown device 82d4
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 508
I/O ports at bc00 [size=8]
I/O ports at b880 [size=4]
I/O ports at b800 [size=8]
I/O ports at b480 [size=4]
I/O ports at b400 [size=32]
Memory at fbffe800 (32-bit, non-prefetchable) [size=2K]
Capabilities:  Message Signalled Interrupts: Mask- 64bit- Queue=0/4 Enable+
Capabilities:  Power Management version 3
Capabilities: [a8] #12 
Capabilities: [b0] Vendor Specific Information
i see "latency 0", i think this is the problem.
What can do for change this ?
motherboard Asus P5Q
8 go ram
harddisk seagate (for my system)
harddisk western digital (for my sound project in ardour)
i have modified the file limits.conf...