Hi Kohinoor,
On Oct 9, 2012, at 4:37 PM, kohinoorthinks <kohinoor.biswas(a)icteas.com> wrote:
  Hi freinds,
 The link checker module is still not working, I have visited all pages with
 external link,
 but any broken links dont show up on the external links tab, is there a way
 to troubleshoot this module? 
hmm, I've just tested it on 4.3M1 and I just had to add:
rendering.transformations = macro, icon, linkchecker
And it worked thereafter.
Are you behind some HTTP proxy by any chance?
Thanks
-Vincent