WordPress Visual editor breaking internal hyperlinks

Hello,

On my WP 2.8.4 blog, I observed a very annoying problem, however I can’t trace back to when it precisely started, maybe with the 2.8 branch, maybe before.

To say it simply : my blog contains “summary” pages, and I usuall paste the same chapter with an hyperlink to a summary page into several blog posts.
I proceed that way : I write my blog post with the visual editor, I open a former blog post with the chapter pointing to the summary page, I copy that chapter (control-c, control-v) into my new post, and I click to save or post it.
And at this point, 50% of the time, the visual editor will save a broken hyperlink.

I’m sorry I can’t communicate my blog’s adress, but let us imagine a summary page is located on
http://www.my-blog.com/2008/05/12/summary (this is my permalinks structure)
I create a post located on
http://www.my-blog.com/2009/08/20/newpost
– well, 50% of the time, the chapter where I write “don’t forget to refer to <i>my summary page</i> for a detailed list of the similar messages, the “<i>my summary page</i>” will incorrectly point to http://www.my-blog.com/2009/08/20/2008/05/12/summary

I searched a long time, but I can’t find any logical reason, nor any person having had that problem before…

My best bet, for the moment, is that the Visual editor is wrong to paste links starting with ../ instead of absolute hyperlinks, but at this point, I don’t know either how to change that setting and force him to go absolute :-/

Please, if you can help with a suggestion, or a recommendation, that will be most appreciated, I’ll be very grateful 🙂
Of course, if you request more information, I’m willing to help too 🙂

Thanks a lot,
Sabinou