Try traceroutes from the devices that can't reach the site and see where the breakdown occurs. That will help determine if it's a network issue or a host site problem resulting from updates or changes.
From: David Lloyd [mailto:da...@future-support.com] Sent: Wednesday, August 08, 2012 9:46 AM To: NT System Admin Issues Subject: RE: Weird issue Can't think what could have changed since yesterday as they where on the said site with no issues. I do know that they updated it yesterday though. I'm going to have to go over there and do some testing I guess. From: Maglinger, Paul [mailto:pmaglin...@scvl.com] Sent: 08 August 2012 15:33 To: NT System Admin Issues Subject: RE: Weird issue Local firewall? HIPS? From: David Lloyd [mailto:da...@future-support.com]<mailto:[mailto:da...@future-support.com]> Sent: Wednesday, August 08, 2012 9:03 AM To: NT System Admin Issues Subject: RE: Weird issue server re-boot didn't fix it either. How strange... From: David Lloyd [mailto:da...@future-support.com]<mailto:[mailto:da...@future-support.com]> Sent: 08 August 2012 14:31 To: NT System Admin Issues Subject: RE: Weird issue Am not sure...I'll have to ask. I take it you referring to the external site in question? What's strange is that a laptop connected to the same router (wireless) is fine.. I'm going to re-boot the server see if that makes any difference From: Rod Trent [mailto:rodtr...@myitforum.com]<mailto:[mailto:rodtr...@myitforum.com]> Sent: 08 August 2012 13:56 To: NT System Admin Issues Subject: RE: Weird issue Did they update or install any plugins or even the WP version recently? From: David Lloyd [mailto:da...@future-support.com]<mailto:[mailto:da...@future-support.com]> Sent: Wednesday, August 08, 2012 8:29 AM To: NT System Admin Issues Subject: Weird issue Hi Guys, Got a call today to say that one particular website won't load from a user. Was working fine yesterday. It's their official website and they use word press to update stuff on it. It works on other networks without an issue. Router was re-booted and no change. I cleared down the DNS cache on the server and still no joy. Cannot get to via IP address either. Can ping it fine. Any ideas? Windows 2003 SP2 server. Can't get to it from the server either. 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