#1 Make sure all of your domains have been submitted to the search engines. If you have a question as to which search engines your domains show up in, try this site : www.marketleap.com
#2 That click-rate is abysmally low, so I would make sure the pages are optimized as well as they can be. If you have a name like bearrugs.info, make sure the links are relevant to bear rugs, etc...
#3 If you are convinced that you've checked on the items above, and they are OK, give sedo a little bit longer. My click rate has varied from around 4% to just over 10%, and I would say that's pretty typical...I've tried Domainhop & am not happy with the results there.
I would play around the keywords. I get a pretty good traffic/click ratio at Sedo usually 25% or better on most domains (even though they don't pay very well per click). But it does take a degree of experimentation with the right keyword to get them. If they are adult, use the Adult Portal as your keyword and don't be afraid to be specific or use their keyword preview to get the right ads.
Is it with their TOS to put them in the search engines after they are parked?
I pick really targetted names that have low traffic, but great turnover with very specific keywords...for example, cutekittenpictures.com gets about 3-4 uniques a day, but it gets about 33% click rate on those 3-4 a day. One of these days, I'll get a high traffic one like that and really go to town.
Sooty,
Picking your own keywords is key. Sedo doesn't do very well at that. They even tell you that in their newsletter. Not dumb, just maybe not informed.
If they do,Then i better delete my parked domains,Cause i definatly submit em to search engines.How could you get traffic without indexing the names in search engines?
How long does it take Google on average to spider your domain?
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1% CTR on SEDO is very poor. The key is to make the keywords as relevant as possible.
What I do is pick a 2 or 3 different targeted keywords and run each of them for a week. Then you'll get a pretty good idea of which one will perform best.
How long have those names been parked for? With 19 names over a month, half that traffic could be the bots that sedo mistakes for users.
With poor names/traffic you often do better to just stick a full page affiliate ad, or even a a simple redirect to an affiliate landing page.
I have about recently parked about 20 domains at SEDO.
How long does it take to start getting some decent click-throughs. Is it something that gets better with time.
Not dumb, just maybe not informed. 
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