SP2 - problems with hyperlinks in Outlook

Hi
Since I installed SP2, my PC asks for a username and password with every
email I get where there are hyperlinks embedded in an Outlook image, pointing
to a location on another server. How can I get rid of this? I don't want to
save my password as it is set to expire every 31 days (corporate environment).
Basically it keeps wanting to re-authorize me instead of using my currently
logged on username & password.

Please post how this can be resolved