Why aren't my web browsers working properly?

[Brittany R]

I can load Facebook, YouTube, Google, and some other basic pages alright on chrome, if a bit slowly. My Internet Explorer will load Google and Bing, but not Facebook. All my other off base things like IMVU.com and photobucket.com will not load at all. I can use off browser apps like Skype, but I can't use the IMVU client.. I've searched all over, tried uninstalling and re-installing several programs, restarting my computer, restarting my modem... help :c

This is what it says when I try to go to these pages:

This webpage is not available
Google Chrome could not load the webpage because photobucket.com took too long to respond. The website may be down, or you may be experiencing issues with your Internet connection.
Here are some suggestions:
Reload this webpage later.
Check your Internet connection. Restart any router, modem, or other network devices you may be using.
Add Google Chrome as a permitted program in your firewall's or antivirus software's settings. If it is already a permitted program, try deleting it from the list of permitted programs and adding it again.
If you use a proxy server, check your proxy settings or contact your network administrator to make sure the proxy server is working. If you don't believe you should be using a proxy server, adjust your proxy settings: Go to the wrench menu > Settings > Show advanced settings... > Change proxy settings... > LAN Settings and deselect the "Use a proxy server for your LAN" checkbox.
Error 118 (net::ERR_CONNECTION_TIMED_OUT): The operation timed out.

(I have done all of the things they suggested)