If you lose connectivity while surfing the web in Firefox, it may decide, automatically, to “work offline.” If you don’t want Firefox to choose to do that automatically, the setting can be turned off.
NOTE: This procedure works in Firefox 3.6 and above in Windows and Linux.
To access the preferences for Firefox, type “about:config” (without the quotes) in the address bar and press Enter.

NOTE: This procedure works in Firefox 3.6 and above in Windows and Linux.
To access the preferences for Firefox, type “about:config” (without the quotes) in the address bar and press Enter.
