Hit http://security.ubuntu.com feisty-security/main Packages
Get:5 http://archive.ubuntustudio.org feisty/main Packages [10.9kB]
99% [5 Packages bzip2 0] [Waiting for headers] [Waiting for headers]bzip2: (stdin) is not a bzip2 file.
Hit http://security.ubuntu.com feisty-security/restricted Packages  
Hit http://security.ubuntu.com feisty-security/main Sources         
Hit http://security.ubuntu.com feisty-security/restricted Sources   
Err http://archive.ubuntustudio.org feisty/main Packages            
  Sub-process bzip2 returned an error code (2)
Get:6 http://archive.ubuntustudio.org feisty/main Packages [10.9kB] 
99% [6 Packages bzip2 0] [Waiting for headers]bzip2: (stdin) is not a bzip2 file.
Err http://archive.ubuntustudio.org feisty/main Packages
  Sub-process bzip2 returned an error code (2)