This is not a frequent problem; maybe happens once every 30 mins - 1 hour of surfing.
I will enter in a website and it will immediately give me "Page cannot be displayed" as if I had no internet connection at the time. No lag, no load, just an immediate "Page cannot be displayed." This happens a lot, and it isn't website-specific. I can be opening a page on nytimes.com or opening up my email sites.
I sometimes get only PART of a page that loads, and part that doesn't. Example, I've been on eBay all day and this happens a lot with other programs, too. Facebook; pictures won't fully load or I get lots of lag. Yahoo.com, same. eBay.com, toolbars don't fully load.
I'm attaching a picture so you guys see a light example of what I mean.
I thought it might be Firefox, but IE and Chrome do the same thing. Could it be my router? Any ideas?
(See top menu bar on the upper-left... not fully loaded)