I have the exact issue as reported earlier.  I am using DotNetNuke 4.0.2 with the latest build 5.2 (built on 24/02/06). The only work around I can think of is to delete and re-create it.  That doesn't look good to ask my writers since they use email links very often.  Thanks for looking up this matter.

Issue 3 was the hyeperlink issue which seems to be mostly solved but I am still having issues if I rename a mailto: link.  I can work around it though.  The issue is if I have an existing link and want to change the email address, it does not always take. That is, the original email address is there after the edit.