Network password on Office 2003

I'm having an odd issue.

At random times Outlook pops up a box asking me to enter network password.

I have, by default saved my password. However, when the "enter network

password" dialog box appears, the password is there in astrisk form. But the

save password box isn't checked. I check the "save password" box and click

OK. It then accesses my email. And later, from 15 minutes to over an hour it

does the same process all over again.

Anyone have any input on this issue? It gets Kind of frustrating.

Thanks,

Scott