Depends on your service, but I was not aware of anyone offering 128Kbps DSL. That's just ~2x dialup. If that is what you are getting, I hope it is cheap. More typical would be 1Mbps (or 128KB/s).
You should check with your provider to see what speed you are supposed to be getting.
Or, run this.
It reports speed in Kbps (lower case "b" = bits; upper case "B" = bytes, but you probably knew that.)