Having a strange problem in our network. Have about 15 users, all XP. Windows SBS2003 server. Just started noticing that certain websites, say siteground.com or elkgrove-laguna.net for example, are not loading. They just time out. The sites that don't work are the same on every computer. I changed my computer to use Google's 18.104.22.168 DNS server and still no luck. The sites work fine if I pull them up on my iPhone. Any ideas on where to start looking? Thanks.