I have a 326m running 3.9/amd64 for months without a glitch. Dmesg below. Perhaps something changed after 3.9 that causes the before mentioned problems.
OpenBSD 3.9-stable (GENERIC.MP) #7: Mon Aug 21 10:28:18 CEST 2006 [EMAIL PROTECTED]:/usr/src/sys/arch/amd64/compile/GENERIC.MP real mem = 2146410496 (2096104K) avail mem = 1835245568 (1792232K) using 22937 buffers containing 214847488 bytes (209812K) of memory mainbus0 (root) ipmi0 at mainbus0: version 1.5 interface KCS iobase 0xca2/2 spacing 1 mainbus0: Intel MP Specification (Version 1.4) (AMD HAMMER ) cpu0 at mainbus0: apid 0 (boot processor) cpu0: Dual Core AMD Opteron(tm) Processor 275, 2194.83 MHz cpu0: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,NXE,MMXX,FFXSR,LONG,3DNOW2,3DNOW cpu0: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 1MB 64b/line 16-way L2 cache cpu0: ITLB 32 4KB entries fully associative, 8 4MB entries fully associative cpu0: DTLB 32 4KB entries fully associative, 8 4MB entries fully associative cpu0: apic clock running at 199MHz cpu1 at mainbus0: apid 1 (application processor) cpu1: Dual Core AMD Opteron(tm) Processor 275, 2194.50 MHz cpu1: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,NXE,MMXX,FFXSR,LONG,3DNOW2,3DNOW cpu1: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 1MB 64b/line 16-way L2 cache cpu1: ITLB 32 4KB entries fully associative, 8 4MB entries fully associative cpu1: DTLB 32 4KB entries fully associative, 8 4MB entries fully associative mpbios: bus 0 is type PCI mpbios: bus 1 is type PCI mpbios: bus 2 is type PCI mpbios: bus 3 is type PCI mpbios: bus 4 is type PCI mpbios: bus 5 is type PCI mpbios: bus 6 is type PCI mpbios: bus 7 is type PCI mpbios: bus 8 is type PCI mpbios: bus 9 is type ISA ioapic0 at mainbus0 apid 4: pa 0xffff80000373ae24, version 11, 16 pins ioapic1 at mainbus0 apid 5: pa 0xffff80000373ad24, version 11, 16 pins ioapic2 at mainbus0 apid 6: pa 0xffff80000373ac24, version 11, 16 pins pci0 at mainbus0 bus 0: configuration mode 1 ppb0 at pci0 dev 1 function 0 "ServerWorks HT-1000 PCI" rev 0x00 pci1 at ppb0 bus 1 ppb1 at pci1 dev 13 function 0 "ServerWorks HT-1000 PCIX" rev 0xb2 pci2 at ppb1 bus 2 mpi0 at pci2 dev 3 function 0 "Symbios Logic 53c1030" rev 0x08: apic 5 int 2 (irq 11) scsibus0 at mpi0: 16 targets sd0 at scsibus0 targ 0 lun 0: <IBM-ESXS, MAX3036NC FN, CA06> SCSI4 0/direct fixed sd0: 34715MB, 49158 cyl, 2 head, 723 sec, 512 bytes/sec, 71096640 sec total safte0 at scsibus0 targ 8 lun 0: <IBM, 25P3495a S320 1, 1> SCSI2 3/processor fixed mpi0: target 0 Sync at 160MHz width 16bit offset 127 QAS 0 DT 1 IU 1 pchb0 at pci0 dev 2 function 0 "ServerWorks HT-1000" rev 0x00 pciide0 at pci0 dev 2 function 1 "ServerWorks HT-1000 IDE" rev 0x00: DMA atapiscsi0 at pciide0 channel 0 drive 0 scsibus1 at atapiscsi0: 2 targets cd0 at scsibus1 targ 0 lun 0: <HL-DT-ST, CD-ROM GCR-8240N, 1.06> SCSI0 5/cdrom removable cd0(pciide0:0:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 0 pcib0 at pci0 dev 2 function 2 "ServerWorks HT-1000 LPC" rev 0x00 ohci0 at pci0 dev 3 function 0 "ServerWorks HT-1000 USB" rev 0x01: apic 4 int 10 (irq 10), version 1.0, legacy support usb0 at ohci0: USB revision 1.0 uhub0 at usb0 uhub0: ServerWorks OHCI root hub, rev 1.00/1.00, addr 1 uhub0: 2 ports with 2 removable, self powered ohci1 at pci0 dev 3 function 1 "ServerWorks HT-1000 USB" rev 0x01: apic 4 int 10 (irq 10), version 1.0, legacy support usb1 at ohci1: USB revision 1.0 uhub1 at usb1 uhub1: ServerWorks OHCI root hub, rev 1.00/1.00, addr 1 uhub1: 2 ports with 2 removable, self powered ehci0 at pci0 dev 3 function 2 "ServerWorks HT-1000 USB" rev 0x01: apic 4 int 10 (irq 10) usb2 at ehci0: USB revision 2.0 uhub2 at usb2 uhub2: ServerWorks EHCI root hub, rev 2.00/1.00, addr 1 uhub2: 4 ports with 4 removable, self powered vga1 at pci0 dev 4 function 0 "ATI ES1000" rev 0x01 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) ppb2 at pci0 dev 6 function 0 "ServerWorks HT-2000 PCIX" rev 0xa3 pci3 at ppb2 bus 3 ppb3 at pci0 dev 7 function 0 "ServerWorks HT-2000 PCIX" rev 0xa3 pci4 at ppb3 bus 4 bge0 at pci4 dev 4 function 0 "Broadcom BCM5780" rev 0x03, BCM5714 B3 (0x8003): apic 5 int 10 (irq 7), address 00:11:25:c4:48:a6 brgphy0 at bge0 phy 1: BCM5780 10/100/1000baseT PHY, rev. 0 bge1 at pci4 dev 4 function 1 "Broadcom BCM5780" rev 0x03, BCM5714 B3 (0x8003): apic 5 int 11 (irq 12), address 00:11:25:c4:48:a7 brgphy1 at bge1 phy 1: BCM5780 10/100/1000baseT PHY, rev. 0 ppb4 at pci0 dev 8 function 0 "ServerWorks HT-2000 PCIE" rev 0xa3 pci5 at ppb4 bus 5 ppb5 at pci0 dev 9 function 0 "ServerWorks HT-2000 PCIE" rev 0xa3 pci6 at ppb5 bus 6 ppb6 at pci0 dev 10 function 0 "ServerWorks HT-2000 PCIE" rev 0xa3 pci7 at ppb6 bus 7 ppb7 at pci0 dev 11 function 0 "ServerWorks HT-2000 PCIE" rev 0xa3 pci8 at ppb7 bus 8 pchb1 at pci0 dev 24 function 0 "AMD AMD64 HyperTransport" rev 0x00 pchb2 at pci0 dev 24 function 1 "AMD AMD64 Address Map" rev 0x00 pchb3 at pci0 dev 24 function 2 "AMD AMD64 DRAM Cfg" rev 0x00 pchb4 at pci0 dev 24 function 3 "AMD AMD64 Misc Cfg" rev 0x00 isa0 at pcib0 isadma0 at isa0 com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo pckbc0 at isa0 port 0x60/5 pckbd0 at pckbc0 (kbd slot) pckbc0: using irq 1 for kbd slot wskbd0 at pckbd0: console keyboard, using wsdisplay0 pcppi0 at isa0 port 0x61 midi0 at pcppi0: <PC speaker> spkr0 at pcppi0 dkcsum: sd0 matches BIOS drive 0x80 root on sd0a rootdev=0x400 rrootdev=0xd00 rawdev=0xd02