Okay, I've been stumped again. I was helping someone with their computer, and they were asking me about online backups. The told me about this program they'd heard about called Carbonite. I hadn't heard of it so we went to check it out. The site wouldn't load. It would just sit there for a few minutes, until IE finally gave a "Page could not be displayed" error. The strange part is that the title would load (in IE's title bar), but nothing on the page. The following is all the information I have:

• she says she's had this problem on other sites, but most pages load just fine
• her husband's computer, which is on the same router, can get to the site and has never had this problem
• I could ping carbonite.com and get responses
• she was using IE, so I tried portable versions of Firefox I have on my USB drive, same thing
• tired clearing cache, temporary internet files, etc.
• ran two spyware scanners and a virus scan
• looked through Hijack this and didn't see anything suspicious
• disabled Windows Firewall
• tried uninstalling and reinstalling the network adapter
• tried a few command line tips I found on the net like ipconfig /flushdns, netsh winsock reset, ipconfig /registerdns

Nothing worked. No matter what I did, that page simply would not load. Any ideas?