Exchange 2010 SP3 causing me some headache with some OWA users?

[cajuntank]

Updated to SP3 this weekend from SP2 UR5 and everything went well...or so I thought. Got in this morning and had about 20-30 users report that they could not log into OWA anymore using their username and password. This is only a small percentage of my total users, so I was troubleshooting, I realized that I could login to OWA from other computers with their accounts, so was thinking maybe some form of wonky security update. Well turns out, I can login from their computer if I specify our domain\username format instead of just the username like they have been using. Also, loaded Firefox and was able to log in with just the old username format without specifying the domain\. So far, I am only seeing this issue with IE8...

Any ideas?

 

[cajuntank]

Well, thought it might be an IE8 issue, but no such luck. Was able to log in with that same user account on another computer running IE8 just fine. Also, made sure updates were current... also, was reported to me that all of a sudden, my copiers no longer are scanning to email. This is just weird.