As I try and carefully phrase the submissions to target the appropriate market this is a quite disturbing move - not least because you used to have two descriptions written independently which could target different key phrases. Now, no more. I've raised this subject with LS UK who agree with my point of view but say "..The US issue will not be simple to fix.." but are making representations in the US.
You can check if this has happened to your site by looking for your directory listing on MSN UK and then looking for it on LS UK. Note, this only happens if your site is in both the UK and US directories. UK only sites are unaffected.