Not that it makes much difference but I can get them too. This is slightly surprising as generally.. when someone links to Avsim, I get some error or other but these work fine for me
I've tried a few more times since Dave posted the URLs yesterday.
http://forum.avsim.net/topic/456174-new ... -released/
This is available again so I now have a copy of the latest release. However, the other URL (http://fs-linda.com/) that Alex and I found independently seems to be an old website that is no longer maintained (since it doesn't have the v2.6.3 release at all).
http://forum.avsim.net/forum/427-linda-downloads/
This was available only once when I checked a few hours ago, when I managed to browse the list of available modules using my iPad. Now, at least using Win7 and IE11, it defaults instead to the same page as the first URL above about the latest release.
Just another reminder why I personally hate having to use Avsim for anything ...