I have Avast anti-virus and run with Windows 7 Home Premium 64 bit. I use BT Infinity as my ISP/
I had problems yesterday with Malwarebytes update and at the moment that program is uninstalled.
This morning when I switched the computer on I received a message "Server Busy". This action cannot be completed because the other program is busy. Choose "Switch To" to activate the busy program and correct the problem. Two boxes "Switch To" and "Retry". The button for Avast was highlighted. The computer was merely booting up - I had not opened any programs.
I clicked on Retry. The Avast button disappeared and everything looks normal.
I did notice that this happened once yesterday when I was messing with Malwarebytes.
Yesterday I ran SuperAntispyware and Avast antivirus scan and all was clear.