Last time I scanned my system with Avira I had 16 Hidden Objects and 4 Warnings. Please take a look:
Starting search for hidden objects.
HKEY_LOCAL_MACHINE\Software\Classes\CL…
[NOTE] The registry entry is invisible.
C:\Program Files\Common Files\Microsoft Shared\Windows Live
C:\Program Files\Common Files\Microsoft Shared\Windows Live
[NOTE] The registry entry is invisible.
HKEY_LOCAL_MACHINE\Software\Microsoft\…
[NOTE] The registry entry is invisible.
HKEY_LOCAL_MACHINE\Software\Wow6432Nod…
[NOTE] The registry entry is invisible.
HKEY_LOCAL_MACHINE\System\ControlSet00…
[NOTE] The registry entry is invisible.
HKEY_LOCAL_MACHINE\System\ControlSet00…
[NOTE] The registry entry is invisible.
HKEY_LOCAL_MACHINE\System\ControlSet00…
HKEY_LOCAL_MACHINE\System\ControlSet00…
[NOTE] The registry entry is invisible.
HKEY_LOCAL_MACHINE\System\ControlSet00…
[NOTE] The registry entry is invisible.
HKEY_LOCAL_MACHINE\System\ControlSet00…
[NOTE] The registry entry is invisible.
HKEY_USERS\S-1-5-21-2359561548-8991087…
[NOTE] The registry entry is invisible.
HKEY_USERS\S-1-5-21-2359561548-8991087…
[NOTE] The registry entry is invisible.
HKEY_USERS\S-1-5-21-2359561548-8991087…
[NOTE] The registry entry is invisible.
HKEY_USERS\S-1-5-21-2359561548-8991087…
[NOTE] The registry entry is invisible.
HKEY_USERS\S-1-5-21-2359561548-8991087…
[NOTE] The registry entry is invisible.
HKEY_USERS\S-1-5-21-2359561548-8991087…
[NOTE] The registry entry is invisible.
writerprodlang.msi
[WARNING] The file could not be read!
Silverlight.4.0.7z
[WARNING] The file could not be written!
Silverlight.4.0.7z
[WARNING] The file could not be read!
C:\Windows\SoftwareDistribution\Downlo…
[WARNING] The file could not be read!
Do I have to be worried about any of these programs? Thanks for your help.


Your question is cut off. There’s no way of reading the rest of the text.
If you trust Avira, let it delete or at least put the suspected objects in the quarantine so they won’t do no harm to your computer anymore.
You can also get a second opinion using this:http://www.malwarebytes.org/products/mal…
It’s not an antivirus so it won’t clash with your AV but it’s very good in removing trojans and spyware.