Missing Username/Passwords

I realize that this might be a stupid question, but I'm not sure how to change this setting...

Recently I have noticed that my user name and passwords are being deleted in Outlook, which requires me to (everytime) enter this information everytime that Outlook checks for mail. This only occurs in Outlook, but this is the only program that has online access with passwords.

I have MRU-Blaster, ID Blaster, spyware Blaster, Ad-Aware, Spyware Guard. I am guessing it has to do with MRU and ID Blaster, but am unaware of any setting in either of these two programs that will allow me to leave Outlook's (specific) ID's alone, while still allowing the programs to perform the rest of what the programs intended actions are.

Any ideas on how to solve this annoyance?

 

Check http://support.microsoft.com/?kbid=290684 if that's helpful.