After you uninstalled Norton did you use the Norton Removal Tool
? This is supposed to get rid of anything left behind after the uninstall.
If you did not use it, please do so.
After running the tool you notice that it made no difference it could be a case of Avira Internet Security not playing nice with your system. The only way to find out if this is the case is to uninstall Avira. If you do uninstall it, make sure to turn on the Windows firewall first. You will also be without AV protection so be very careful of where you go on the internet until you can get another AV.
If the system runs faster, you will need to get another firewall and antivirus. As Deejay mentioned Microsoft Security Essentials would be a good choice for an AV. PLEASE NOTE that MSE is antivirus only. It does not contain a firewall.
If it isn't any faster and you want to keep Avira reinstall it.
Since you are concerned that it could be due to a virus scan your system with an AV scanner and a good malware scanner such as Malwarebytes
. Links lead to free edition of both products.
One thing I encourage people to do when consider buying a security product is to install the free trial of the product before buying. This will give you a chance to evaluate the program AND to find out if it does play nice with your system BEFORE spending your money on it.
Edited by Queen-Evie, 24 December 2011 - 08:58 AM.