I am afraid you have one of the rogue infections and if that is the case please do NOT run any type of programs especially any that would remove any type of files especially temp files because these rogues hide your files as temp files and if you run anything you run the risk of deleteing your actual files. To fully remove this nasty from your pc please go to the link I am providing, register there, and post a new thread in the area I link you to. Do not follow instructions you may find there that sound similar to your problem each person needs their own instructions. The team there is wonderful and will work with you to rid you of the problem. If you need help getting there let me know I am there also. Analysis and Malware Removal that forum has helped many others from here and elsewhere to clean completely their infection.

agree, if you see it coming back that means it is deep rooted and is not being fully removed, in those type cases it takes the use of some special programs that can only be used with the aid of the support help forums, if you need a link to one you can go here, register, and post a thread in that area. Analysis and Malware Removal since you did not tell us which programs you use that makes it difficult for us to know if you are using good legit tools. If you do not have malwarebytes free then you will definitely need it. How to download and install Malwarebytes' Anti-Malware application for Windows computers always update before using it and always do full scan.

What SMTP (outgoing) server were you using? Unless your ISP has a specific outgoing server that allows you to connect when you're outside their network, that was your problem. Most hotel broadband connections, wired or wireless, don't have their own mail servers. Thus you have to have one of your own that will let you logon securely from a random connection to the Net. Try using a account at Yahoo, Hotmail or log onto ISP online account and send through them.

When installing Norton as a Comcast customer, the download is from Norton. I was a Norton Customer before becoming a Comcast customer and other than a bit of brand signage, the Norton Suite doesn't appear to have different versions. There's no need for any third party uninstaller program - if you look on your program menu under Norton Security Suite, one of the choices is Norton Uninstall. I can tell you from my own experience that that utility works very comprehensively. I once had a corrupted file that required an uninstall - reinstall that wasn't working for me, and Norton Tech Support used that tool on a remote connection. OP, I'm glad everything is working for you again.