Exchange 2007 SP1 Rollup 3 OWA blank page

If you have modified the logon.aspx from OWA and apply the SP1 Rollup 3, you will probably get a blank page if you try to login to your OWA. I fixed this by applying the Rollup 3 on another machine and copying the patched logon.aspx to the productive server.

It might also work if you update the logon.aspx by hand. You will have to change the links from to, but i didn't test it.