It could be any number of things. You didn't mention anything about your system, hardware, OS internet hook up. First blush it sounds as if it could be a malware infestation, Spybot or Avast, if they are the freebies won't likely cut it. Try this, download Malwarebytes, boot into Safe Mode With Networking, scan with MWB, when the scan is complete click Show Results, if malware shows on the list, attempt removal. If you can't download MWB, go to clean computer, download MWB send to flash drive or CD, boot sick system to Safe Mode With Networking upload MWB from FD or CD and follow the aforementioned procedure, see if that is the problem. A little more information might also help since this is just a guess, however, I've seen bugs create just the kinds of issues that you cite.
I cannot log on to Facebook at all. It says the server is too slow to respond, and it has been that way for three days now. I thought it was just Facebook, but now I cannot send attachments, (photos) from my yahoo email. When the page or attachment is loading, the load symbol is not green its grey. ( I dont know what else to call it..Im sorry) I can get on to m.facebook.com however. I have run scans, I have tried using IE and Google Chrome instead of my usual Mozilla Firefox. Its the same results, I have updated my Adobe Flash Player, all Windows updates have been installed, I have run defrag, and spybot scan, and I keep Avast on at all times. What could be the issue? I am not a whiz at computers, so I apologize.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic