The problem started this afternoon. I have tried and it's not working. But my phone browsers open facebook. Can anyone help? Please/

What error message do you get?

Meanwhile, clear your cache and try again.

Afam4eva: What error message do you get?

Meanwhile, clear your cache and try again.

I have done that and this is the error message:
This webpage is not available
Comodo Dragon could not load the webpage because www.facebook.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 Comodo Dragon 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 Dragon menu > Settings > Show advanced settings... > Change proxy settings... > LAN Settings and deselect the "Use a proxy server for your LAN" checkbox.

Tks guy u r rilly tryn mine is any securd site like facebuk , e-mail etc althou av 4gotn d erro msg ill chek it again ,and also wen am downlodin smtin my system re-boots