Could you let me know if this stops the alerts

CAUTION : This fix is only valid for this specific machine, using it on another may break your computer

Open notepad and copy/paste the text in the quotebox below into it:

CreateRestorePoint: FF Extension: AdBeaver - C:\Users\Jella\AppData\Roaming\Mozilla\Firefox\Profiles\3lrtsc1c.default\Extensions\adbeaver@adbeaver.org.xpi [2015-06-02] 2015-07-15 18:26 - 2015-07-15 18:26 - 00000000 ____D C:\Users\Jella\AppData\Roaming\AVG 2015-07-15 18:25 - 2015-07-15 18:26 - 00000000 ____D C:\ProgramData\AVG 2015-07-15 18:25 - 2015-07-15 18:25 - 00000000 ____D C:\Users\Jella\AppData\Local\Avg EmptyTemp: CMD: bitsadmin /reset /allusers

Save this as fixlist.txt, in the same location as FRST.exe

https://dl.dropboxusercontent.com/u/73555776/FRSTfix.JPG

Run FRST and press Fix
On completion a log will be generated please post that