Strange problem with FURL site links

The past few days Ive noticed a strange thing on my site. I have ditto creating a list of almost 1000 documents. On some occasions Ive noticed ditto/modx is putting a capital letter into the URL of the ditto link to that page. For example if the page is located at:

www.mysite.com/friendly

but the page that is being linked is:

www.mysite.com/Friendlyurl

I’m not sure how concerned I should be about it, becuase initially it shows up the correct page, but on refreshing or say if someone bookmaked that page, the page does not exist..

Has anyone experienced this before or know what may be causing it? Seems odd..

I wonder if you have a phx modifier somewhere that is not quite behaving as expected?

Thanks for the reply Susan, it got me a bit puzzled, I was hoping someone else might have experienced the same problem..

I think I am only using PHx once with ditto, infact I dont think I use that call anymore so dont think I am using it at all. Seems strange as you would think it would do it to every link and not just some, plus it only happens randomly, its not consistently making a certain link uppercase. On my sitemap page I use pretty much the same ditto call and template to list all of the dcuments in this section and I have just ran the pointer over them and didnt see an uppcase ones appear in the browser bar at the bottom..

I’ll keep and eye on it, but if anyone has experienced it or has an more suggestions please chip in