Trend Micro antivirus. Maybe it is not problem on your site, maybe it is false alert on my company server, but I suggest to check your web server.
count ya self lucky.....i have a news site and the monthly impressions are about 2000 yet the value of these clicks is just $100
I get about 1.5 to 2.5 percent CTR. Not great, but I get right around a thousand uniques of long tail search traffic per day. I have tested and tweaked it to no end using Yeildbuild (free service now by the way, highly recommend it). Set up a few ad zones and let the service tweak your ads for you.....
I think you're doing fine. 1-3 CTR is good. I know people who have a constant CTR of 0,25% Your traffic comes from different sources, which is very important. Don't depend on one source of traffic. Try to play a little with ad placement for an even better CTR.
you should try to experiment on ads placement to increase your CTR. but first you need to have a good amount of traffic to your website..