Problem with links in post

[wolfe]

hi when i add a link to a post on my site the url gets all corrupt example

Google will be fine on here but if i posted it on my vbulletin it come up like this

Google still looks the site but the actual link is now like this

http://"http://www.google.com/"

it keep adding http://" at the front and " at the back

but the only way i can stop it happening is by editing everythread and removing the " and " from the url.

im using vBulletin 3.8.0 RC1 but its been doing it on all my versions of vbulletin since 3.6.x

can anyone help me sort this out. thx