Hi Jesse, More datapoints. First of all, I don't see the problem, so this is an exclusion data point. Machine is up 1 day, 19:02 I use 2.6.16 and I'm NBOT running at Gigabit speed. (just couldn't get e100 cards anymore, they are not sold anymore here) Version: vendor 00:aa:00, model 56 rev 0 Services: I'm routing, run IPsec, do firewalling/nat with iptables, do PPPoE on this machine but all not on that interface. The card is exposed to the local LAN interface. [4294671.426000] e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection [4294671.447000] e100: eth1: e100_probe: addr 0xe3140000, irq 10, MAC addr 00:D0:B7:XX:XX:XX [4294671.447000] eth2: VIA Rhine II at 0xe3142000, 00:0f:ea:XX:XX:XX, IRQ 11. [4294671.448000] eth2: MII PHY found at address 1, status 0x786d advertising 05e1 Link 41e1. [4294671.448000] forcedeth.c: Reverse Engineered nForce ethernet driver. Version 0.49. [4294679.125000] e1000: eth0: e1000_watchdog_task: NIC Link is Up 100 Mbps Full Duplex [4294679.165000] e100: eth1: e100_watchdog: link up, 10Mbps, half-duplex [4294679.201000] eth2: link up, 100Mbps, full-duplex, lpa 0x41E1 lspci with info for this card. 0000:00:0c.0 Ethernet controller: Intel Corp. 82541GI/PI Gigabit Ethernet Controller Subsystem: Intel Corp. PRO/1000 MT Desktop Adapter Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- SERR- mtu 1500 qdisc pfifo_fast qlen 1000 link/ether 00:0e:0c:XX:XX:XX brd ff:ff:ff:ff:ff:ff RX: bytes packets errors dropped overrun mcast 648259157 1081155 0 0 0 115 RX errors: length crc frame fifo missed 0 0 0 0 0 TX: bytes packets errors dropped carrier collsns 393218241 933436 0 0 0 0 TX errors: aborted fifo window heartbeat 0 0 0 0 My config is attached, more data on request. I can play with parameters, but cannot test patches. Regards Ingo Oeser