I have found several times recently, when attempting to embed a link, that when I view the posted message, the link, and sometimes a significant portion of text either before or after (or in a very Catholic manner both) is missing from the post.
The method I have been using is
1. Highlight the text to be used as the link
2. Click on the Insert Link button
3. Paste the web address copied from another browser window into the dialog box
4. Click on Ok
The easiest way I've found is to use the BBCode, but another alternative is to copy the link to the message (make sure there is a space on either side), then preview the message and edit the text portion of the link to read the way you want it to. The actual hyperlink will remain.
____________________ Understanding is the reward of faith. Therefore seek not to understand that you may believe, but believe that you may understand. - Augustine