I just recently installed a fresh copy of windows 7 professional on my computer along with Eset Smart Security 6.0.308.0 and Malwarebytes Anti-Malware (Pro) 188.8.131.520. I am wonder whether or not it will conflict if i choose to install the free version of Avast using their (new?) "Compatible Install" feature (Install as the 2nd line of defense). It was able to pick up things eset couldnt find and gave me problems with, another thing I like is they have a scan on boot feature which is pretty neat. I may even upgrade the free version in the future. So i would really like to run both if i can. Will there be significant problems?