I guess this folder should be used:
ftp://ftp.scientificlinux.org//linux/scientific/30x

but not sure

In SL CERN 3.0.8 apt is using slc30x by default although the folder 
slc308 exists (have a look here http://linuxsoft.cern.ch/cern/ ) , so 
you may give a try.

Serge

[log in to unmask] wrote:
> Hi
> I have scientific linux 3.0.5 installed on my system(For some particular
> reason I can not upgrade it). The content of
> /etc/apt/sources.list.d/sl.list is
> rpm ftp://ftp.scientificlinux.org//linux/scientific/ 308/i386/apt-rpm os
> updates contrib
> 
> But there is no 308 folder in
> ftp://ftp.scientificlinux.org//linux/scientific/
> site so apt-get update does not work. There is a 309 folder on the site.
> Should I change the name of the folder in sl.list and would it create any
> problem in future.
> Thanks
> Kashif
>