Thanks to John Navas for his previous help with this issue:
Losing connection (Computer->Wireless->Router->DSLmodem)
- I can get to my router (since I use the IP addr); it seems to be able to ping and trace all addresses using either IP addr or host/domainname
- FireFox and cmd line (ping, ftp) won't let me get to anything unless I use the IP addr
- today I tried for 30 mins to fix it before rebooting (and then things worked fine again)
Here's what I tried (some multiple times):
ipconfig /all, /renew, /refresh, /displaydns, /flushdns, /registerdns nslookup nbtstat -R
I also tried going into the network properties and entering the IP addr for dns.sbcglobal.net as the DNS server (and refreshing everything) but it still wouldn't work.
I wonder if it is related to either of these:
How Internet Explorer uses the cache for DNS host entries
Any other thoughts? Thanks!