I've never liked full page ads. They're frustrating, even only getting them once in a 24 hour period. Usually, it happens before I'm logged in, so even having a permanent or paid account doesn't help if you don't stay logged in all the time (I'm not about to leave myself logged in on my computer at work because I don't know what they monitor there and I know other people use it from time to time when I'm not in the office). Especially because it loads the page and I'm ready to start going through, and wham... ad comes up.
The banner ads are fine. They're unobtrusive and I've yet to get a virus warning. However, judging by the types of ads that are coming through, this particular server probably doesn't have any sort of pre-approval process for their ads. They just take anything. Ads with sound, ads with scripts, ads with viruses, ads with pornographic and potentially offensive content... deviantART, LiveJournal, Gaia Online, and several other sites have gone through these issues in the past. The ads are difficult to track unless you can get certain codes out of them with a code bug tracker in your browser or some sort of event logger that reads identifying codes from the ads. For me, many of these ads will make it difficult for me to enjoy the site from anywhere but home. Ads with sound will draw unwanted attention to me at work, ads with scripts and viruses could be potentially damaging to my work system if the virus software our IT admin installed doesn't recognize what's happening, and I definitely can't have those NSFW ones coming up.
If there was, perhaps, a way for you to moderate the stream of ads as far as what's acceptable, or work out something with the ad server for them to limit what kinds of ads come to you here, that would be great. Unfortunately, I'm unfamiliar with the services out there for ad servers, so I'm uncertain if this is even an option, and I understand if it isn't. However, if it isn't, then considering another ad server service (as I'm sure there are many) might be an option for you to think about.