Memeber info linking issue

[Sabcio71]

I had a member registered two months ago username (example) snowflake.
a new member with username (example) Snow-Flake has registered.
When clicked on newest member vBulletin takes it to the user that has registered two months ago.
In the mean time I have added a number at the end of new members name which resolves the issue, all tamplates are up to date.
How can I fix and avoid this issue in the future?

[Jake Bunce]

Are you running vBSEO or some other SEO addon which changes the URLs? That is probably causing this. Contact the author of your SEO program.

[Sabcio71]

Actually yes - VBSEO - I have overlooked the relation. Thank You