I thought you might be right, so I reinstalled the program and gave it server rights in Zonealarm.This way Winmx can open any port it wants/needs at any time, but this did not help att all. As a test I just searched for 'beatles'. This would normally return somewhere between 1000 and 2000 results (sometimes even more).How many do you think I just got? Exactly 1!!!!! Very strange.
Something else strange happened. My ISP has limited the upload speed to about 15kbps (for all users) to prevent people from running servers.
When I use the 'primary connection' option in Winmx it breaks this barrier. The speed peaks at over 30kbps. It should not be possible, but fortunately it is. At least they did something right in the new version.