overriding debian repositories

[Tony Baechler]

Hi,

Where you put a source in sources.list generally doesn't seem to 
matter.  I suggest you read the apt man pages, specifically read about 
pinning.  I think that's in apt(5) but I'm not sure.  It's also 
documented on debian.org under documentation.  To see what your pinning 
priority is, do "apt-cache policy package" and look for the number 
listed, such as 100 or 500.