Hi,This problem has been driving me nuts for weeks and I thought maybe someone would read this post and say "I know what is causing that" I have 4 computers networked together all using 3com 905 tcx combo cards (10/100) I am using a linksys befsr 4 port router. The problem I keep running into is that on a daily basis I am forced to reboot the computer I work on to reestablish internet connectivity. I am still able to access all other network resources (files on other computers, printers etc) but when I check email using eudora I get the error message "host not bound to socket" and when I try using my browser (IE 6.0) I get the message that the webpage can not be displayed. I have tried removing/reinstalling the NIC, removing and reinstalling Netbui and TCP/IP from the network neighborhood, but nothing seems to work. The problem first appeared when I bought the router, I was using an old computer as a server before running sygate software, and never had this issue. I have also tried a different router (one by netgear) but the problem remained the same. I have tried releasing/renewing through winipcfg once the error appears, but I get an error message when attempting this. I installed and have been running the 3Com NIC doctor software, which assures me that everything is fine :/ Any suggestions would be appreciated, especially ones that actually work 