Hi,
wich version of avast have you installed? Is the last one 7.0.1426?
Any other security software installed? And previous is uninstalled completely?
Can you tell to us your system configuration, like OS, CPU, RAM...? What is your DSL speed?
I used the last version of Avast as I updated it regularly. Yes, I have Malwarebytes installed but it has always played nicely with everything I've done. I had used avast for a very long time but version 7 somehow didn't want to play along with uTorrent.
My system configuration of this laptop is:
AMD Athlon x2 2.3 Ghz CPU
4GB RAM
Windows 7 Ultimate x64 OS
AMD Radeon HD 6650M GPU
I don't use DSL, I think. I have a 100/10 fiber connection. 100 down, 10 up.
What's with the verification of every post? Really tedious.