Thanks. I have comcast webmail. If it was my computer sending the emails, would they show up in my sent emails? If so, then maybe i dont have a problem.
No they wouldn't show up on sent items folder. Some malware comes with its own very small SMTP program which can send emails independent of your email client.
Having webmail only strengthens my view that someone you know is infected and their system is sending the email with a faked from address of your email address.
I take it that the address is your comcast webmail one ?
Also, i ran a scan with system restore disabled and the results came back with 336 lines unable to be scanned. Does that indicate a problem or is that because system restore was disabled? Otherwise no viruses were found.
No it doesn't indicate a problem, avast should also give a 'reason why' the files were unable to be scanned. Please give some common examples ?
Many programs (usually security based ones) password protect their files for legitimate reasons such as AdAware and Spybot Search & Destroy, there are others (and avast doesn't know the password or have any way of using it even if it did know it).
When you run scans with the above programs and you delete harmful entries that they detect, a copy is kept (in quarantine/restore/backup) in case you need to reverse what you did. These are usually password protected, you should do some housekeeping and delete old backup/recovery/quarantine entries (older than two weeks or so), this will reduce the numbers of files that can't be scanned.
By examining 1) the reason given by avast! for not being able to scan the files, 2) the location of the files, you can get an idea of what program they relate to. You may need to expand the column headings to see all the text.
Files that can't be scanned are just that, not an indication they are suspicious/infected, just unable to be scanned.