My problems with AVG haven't been with how well it stops viruses or spam - seems to be OK though not the best. True, it is a complicated and changing world out there. But the program itself is becoming a huge problem, I can't even tell you how many times I've had to uninstall & reinstall it on this server, not to mention almost all of the workstations, for various reasons ranging from mobile devices not getting updated by Exchange to Outlook taking 10 minutes or more to open. Poor instructions on which components to install & where, in what order, how to configure them, and apparantly sloppy installer programming are all recurring issues. It truly makes me very reluctant to place any confidence in the software's ability to find and remove viruses - it can't even uninstall itself properly!
Their tech support has admittedly gotten a lot more responsive in the last year or two, but it is SO frustrating to have to go through the whole routine of running diagnostics, sending screenshots, uninstalling, reinstalling, uninstalling manually, reinstalling again, etc etc etc until they finally offer their remote assistance and a tech spends 5 minutes changing one undocumented registry setting that solves the problem - after I had been asking for that exact solution the whole time! That is a true story. And now I'm in the middle of it again. I am a freelancer and I feel terrible because I have charged this particular client several times more in my time troubleshooting things like this than they paid for the software or should have paid to have it installed. Of course I end up only billing for a fraction of my actual time spent. At this rate I will go out of business if I continue to support AVG installations.