@thom,
First thank you for reporting this.
Second, what happens if you disable cform? Do the links reappear? And if so, do they disapear again when you reenable cform?
Also, they is no "6.6 ante beta" version. The official release is 6.5.2.1 which was released on November 2008 (I think). An alpha version, 6.5.2a, was also released earlier.
That is what should appear in the readme.txt file in the plugin directory (Stable Tag). If this is not what you have, could you tell us where you got the plugin please? It is either a mistake we made or you are not using one of our release or it simply is not our plugin (there are many of them out there).
We need to know so we can correct it if it is our mistake or advise people if it is not our plugin.
If you are indeed using our 6.5.2.1 release, please submit a bug report on our bug tracker (the link is on the right of this page) ad choose the "plugin compatibility" category.
If yo are using the 6.5.2a release, could you upgrade to 6.5.2.1 and see if the problem still occurs?
Again thank you (merci) for submitting this,
Laplix