First: my english is realy bad - sorry My PC hangs sporadicaly (every 2 weeks) after heavy Network traffic. I tried to work around the problem by changing the NIC (dmfe > realtek, using new driver 8139too), but it din't help. Today i had the luck ( :-( ) that the syslog-console was activ, so that I could get the messages (otherwise the PC hangs completly, and its no more longer possible to change the console) The PC akts as a small server. Main running services: Kernel-NFS Samba 2.2.1 mysql sshd: OpenSSH_2.9.9p2, SSH protocols 1.5/2.0, OpenSSL 0x0090602f apache w/ php ip-filter squid Hardware: lspci -v says: 00:00.0 Host bridge: Acer Laboratories Inc. [ALi] M1541 (rev 04) Subsystem: Acer Laboratories Inc. [ALi] ALI M1541 Aladdin V/V+ AGP System Controller Flags: bus master, slow devsel, latency 32 Memory at da000000 (32-bit, non-prefetchable) [size=16M] Capabilities: [b0] AGP version 1.0 00:01.0 PCI bridge: Acer Laboratories Inc. [ALi] M5243 (rev 04) (prog-if 00 [Normal decode]) Flags: bus master, slow devsel, latency 32 Bus: primary=00, secondary=01, subordinate=01, sec-latency=32 I/O behind bridge: 0000d000-0000dfff Memory behind bridge: d8000000-d9ffffff Prefetchable memory behind bridge: db000000-dbffffff 00:07.0 ISA bridge: Acer Laboratories Inc. [ALi] M1533 PCI to ISA Bridge [Aladdin IV] (rev c3) Flags: bus master, medium devsel, latency 0 00:0f.0 IDE interface: Acer Laboratories Inc. [ALi] M5229 IDE (rev c1) (prog-if fa) Flags: bus master, medium devsel, latency 32, IRQ 5 I/O ports at f000 [size=16] 00:10.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139 (rev 10) Subsystem: Realtek Semiconductor Co., Ltd. RT8139 Flags: bus master, medium devsel, latency 32, IRQ 10 I/O ports at e000 [size=256] Memory at dd000000 (32-bit, non-prefetchable) [size=256] Expansion ROM at dc000000 [disabled] [size=64K] 00:14.0 Network controller: AVM Audiovisuelles MKTG & Computer System GmbH A1 ISDN [Fritz] (rev 02) Subsystem: AVM Audiovisuelles MKTG & Computer System GmbH FRITZ!Card ISDN Controller Flags: medium devsel, IRQ 11 Memory at dd002000 (32-bit, non-prefetchable) [size=32] I/O ports at e400 [size=32] 01:00.0 VGA compatible controller: ATI Technologies Inc 3D Rage IIC AGP (rev 7a) (prog-if 00 [VGA]) Subsystem: ATI Technologies Inc: Unknown device 0084 Flags: bus master, stepping, medium devsel, latency 32, IRQ 11 Memory at db000000 (32-bit, prefetchable) [size=16M] I/O ports at d000 [size=256] Memory at d9000000 (32-bit, non-prefetchable) [size=4K] Expansion ROM at [disabled] [size=128K] Capabilities: [5c] Power Management version 1 and now the errormessage: invalid opperand: 0000 CPU: 0 EIP: 0010:[] ------ inserted (the only simmilar entry in System.map:c010a120 t IRQ0x00_interrupt) ------ continue EFLAGS: 00010046 eax: d4ac5428 ebx:00000014 ecx:00000054 edx:14c42814 esi: 0402d7c0 edi:26dd33a3 ebp:04040101 esp:c2f23fe8 ds 002b es 002b ss 0018 Process sshd (pid 1407, stackpage=c2f23000) Stack: ffffff00 08078480 00000023 00000206 bffff236 0000002b Call Trace: Code: ff ff eb d9 89 f6 8d bc 27 00 00 00 00 68 01 ff ff ff eb c9 teh error ocured while i was doing a backup via ssh & tar + gzip ( something like: ssh 192.168.0.1 tar -cSp --numeric-owner -f - /xport/netdata | gzip> \ /var/backup/hdd4/filename.tgz) but as I said simillar errors ocure not only while running ssh. Same error i had with earlier Kernelversions (2.4.9, 2.4.8), thats wy i use a out-of-the-box-kernel of a Distribution (SuSE). If this error seems to result out of a hardware error, a reply would be verry nice. I send you the output of dmesg as a txtfile. I'w downloaded today aktual Kernel and try it with 2.4.17. Thank you all for doing such a good work on this nice OS. I work since 3 years with Linux - and I enjoi it every day. A happy new year from Berlin Klaus -- live free or die :: linux