I encounter the below problem when access facebook but no problem for all others web site... =S
Invalid URLThe requested URL "/", is invalid.Reference #9.3e556acb.1337250952.21c9cc69
Found this solution from someone website and solved: \(^o^*)/
- Go to folder "C:\Windows\System32\drivers\etc"
- Open hosts file with notepad .
- Copy below and paste in hosts file
- Click on save to save the hosts file
- Close the browser
- Open and access to facebook again.