Google internet speed test and it should give you links to sites in your country that will test connection for you.

As for does wireless effects DL speeds. Most likely it does but how much it depends on what kind of router you have set up and how strong of a signal you are getting. 

You could try to get someone to set up cable connection test it out and then set up wireless and compare them. Not sure how it is in Germany but here in UK most ISP throttle customer connections after they reached certain amount of data transfered. 

Speedtest.net as the above said.

Generally everyone overpays for substandard performance.

And in response to Greg30007's idea, for wireless go for a Dual-Band Wireless N router/card, or a newer one that is not Wireless G or B.

Nice speeds

Thanks so much.

I just tested and think I am getting ripped off. According to the link above, I am getting this:

http://www.speedtest.net/my-result/2885109008

which is exactly 6 MBbit. Exactly the throttle of what I would have gotten had I gotten the shitty standard package. It's as I had suspected, they are cheating. Is there anything one can do about somthing like this?

I am confused as to the value of the ping. Are lower or higher numbers "better"? Which ping value is good?

thank you

Low ping numbers are better, higher numbers show that it takes longer in miliseconds to reach the server in question.

There are a few ways to deal with slow connection due to being cheated by a company.

1. Call an complain and threaten to switch companies

2. sue them (won't be likely to win)

3. Call and have your connection evaluated, it might be that it is broken or damaged.

4. Call and ask what your MBs cap is, and if you have exceeded it.