I have been using avast anti-virus free for a number of years, but now I have a problem
I am using a netbook, Lenovo, windows 7, Intel celeron cpu1005m, 1.90Ghz, upgraded to 6Gb ram (from 2Gb). I am using the netbook temporarily whilst my laptop is having the battery replaced. I have had to send it away and the shop says it could take a month.
I have just got back from the shop, and I found that the cpu was running at 100%. On investigating the processes I discovered it was the avast service. Then I found that if I switched off the web shield CPU usage was mostly fine - have to not open too many tabs on google chrome.
Before I went to have the ram upgrade the netbook was slow but normal cpu usage.