2.6.7 SMP runs my e1000 just fine. When I apply either the mm4 or mm5 patch, the NIC slows down to about 1/8 speed (20 - 40 KB/s as opposed to 280 - 300 KB/s without the mm patch), but only to the Internet via cable modem (SurfBoard SB3100). All other network access to local machines is fine and full speed ahead (6 - 8 MB/s) over 100 Mb full duplex connections. Hardware in this system: SuperMicro X5DA8 MB (Intel 7505 chipset) 2 - 3.06 GHz P4 Xeons (533 MHz frontside and 1 MB L3 cache). Onboard Adaptec Dual channel 7902 Ultra 320 SCSI 2 - 1 GB DDR Ram (Crucial PC2100) Onboard Intel 82545EM Gb EtherNet Running Fedora Core 2 release. 2.6.7 and with mm[45] patches built from the kernel.org tree. I really need to run the mm? series because I want to add a 3Ware 9500 Raid array of SATA disks to create a large file and backup server. Anyone seen similar problems? Is there a patch I can back out to work around this? -Smitty Hibbard T. Smith, JR smitty@essnjay.com - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html