Having a problem with faceboook chat with messages not sending or hanging and taking awhile before they are sent?...try this:
-Internet Explorer Users
- Delete your temporary Internet Files and cookies along with other options displayed as you wish to be deleted
-First click on tools, internet options, Browsing history, delete, a window will pop up, check the items you wish to be deleted, click delete
- After this process is finished see if it helps you.

Thanks