facebook was down for more than 20 minutes on friday 23rd September 2010 , its day after forbes announced mark zuckerberg founder /lead developer of facebook richer than steve jobs ,
with reserves over $6.9 billion
error rendered during downtime was
Service Unavailable – DNS failureThe server is temporarily unable to service your request. P Reference #11.7444afc3.1285272561.1018d81b
facebook have millions of users from all around the world , downtime busted other social networks like twitter with millions of tweets related to downtime of facebook.

Heres a way to fix code 39 driver error, if you get “Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code 39)” when to try to read CD ROM or DVD then its a small bug , to fix the issue follow these instructions :

Click “Start” and then “RUN” then type REGEDIT and hot enter . then expand the following folders :
HKEY_LOCAL_MACHINE > SYSTEM > CurrentControlSet > Control > class> {4D36E965-E325-11CE-BFC1-08002BE10318}

then delete any of the following names in right hand column :
UpperFilters , LowerFilters , UpperFilters.bak , LowerFilters.bak

once you delete the keys close the registry editor and then restart your computer after restart click “my computer” and checkout cd/dvd rom . i am sure it will work