Can't connect to specific Web site

I was able to access all Web sites using PCs attached to a WRT54GS (wired and wireless). Then, when nothing seemingly changed in my setup, I could no longer access a specific site with either wired or wireless. It is a site I access frequently (an ecommerce site that I maintain). Once the problem was seen on one PC, it is seen on all PCs using the router. It is a domain that I have registered, but I am not hosting it myself. Others have no problem accessing this web site.
I was able to reset the WRT54GS a couple of times (not just power cycling) to get rid of this problem, but eventually, the problem was no longer corrected by a reset. I also upgraded to the latest firmware, and it did not help. I tried removing the router and connecting a PC directly to my cable modem. I could access the site just fine this way.
I tried a different router (BEFSR41), and everything worked fine for a few days. Then the same problem started happening again. Resetting the BEFSR41 also stopped fixing the problem after a couple of tries. Again, hooking an individual PC directly to the cable modem worked fine.
I then tried a second WRT54GS router. For several days, there were no problems. But eventually, the site was not accessible again. I have found no other sites that I could not access. I have borrowed a non-Linksys wireless router for over a month now, and the problem has not been seen.
My question is why do three different Linksys routers (2 WRT54GS and 1 BEFSR41) no longer allow me to connect to a specific Web site? Is there anything I can do to fix this problem?

I had the same problem, and I finally solved it through DNS refreshing.
After MTU manipulation left me nowhere, I tried ye olde:
ipconfig /release
ipconfig /flushdns
ipconfig /renew
...with no success.  I then looked over the ipconfig options, and decided to try:
ipconfig /registerdns
...which finally worked!
So much for twelve hours of my life.
Message Edited by Nicole Tedesco on 12-19-2007 08:51 AM
Message Edited by Nicole Tedesco on 12-19-2007 08:51 AM

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