is there a problem with the DNS for all a-ads sub domains like ad.a-ads.com? At least with the DNS server from "Deutsche Telekom" I get the answer Host ad.a-ads.com not found: 3(NXDOMAIN) (since two days)
If I ask several other open DNS server like google or dyndns I always get a different IP. May this is ok because of the Round-robin DNS or similar technics. Everything else is working just the sub domains of a-ads not. Is there an issue with Deutsche Telekom? Because the DNS server from Arcor (another german internet provider) is answering.
Thanks for your message. Yes, we use round-robin technique, and it seems to be working just fine. But recently we received a letter from Microsoft (!?) that some users might be affected by DNS issue due to the blocked TCP port on our DNS servers. We'll need to find a solution for that.
Only thing that concerns me is I had well over 5,000 unique visitors yesterday, and only 2,000 impressions. It's not adding up.
That is actually a ripoff. a-ads.com needs to raise their rates.
There are no fixed rates since we are not pay-per-impression network. CPM is just an average indicator, not a fixed rate. It depends on advertisers' behavior and differs a lot from ad unit to ad unit, from category to category too.
Guys i have an Ad Unit and i want to add categories to it
You can't, sorry. Categories are assigned manually by us, it may take a while, especially for sites with low PageRank. Trash sites may remain in the Unknown category forever.
If you have a quality site, please let me know your ad unit id to make it quicker. Low quality sites can be moved back to the Unknown category anytime if they generate fake traffic or are banned by many advertisers.
Okay, found it. 
