Hi Zonko,
Actually i also faced the same problem which you have faced.
i installed avast internet security7.0.it showed my laptop is secured.
After that yesterday i have tried to connect internet via USB. While i connect, that drive was not detected.i felt my usb driver problem than again i tried to uninstall the avast antivirus.finally i uninstalled avast from my laptop.
Do you find any solution for the problem which is unblock USB driver with avast internet security?
If you know please share with me.
Thanks in advance.