perl 5.6.1-8 vs 5.6.1-7

[Mark Copper <m.copper@wayne.edu>]

I'm trying to install Perl onto a new system.  "apt-get install perl" 
won't work because perl-base is required and a conflict arises.  That 
is, "apt-get install perl-base" says the latest version is already 
installed, but this appears to be version 5.6.1-7, and "apt-get install 
perl" wants version 5.6.1-8.

Could this be related to having Debian security in my sources.list?  I 
see from the debian-changes list that 5.6.1-8 was accepted in November.  
But the distribution is "testing-security".  How is that different from 
simply "testing"?

Thanks.

Mark