what I normally do to see if my 10 meg is working okay is download something from a really fast server.
1 I normally use is :
ftp://mirror.ac.uk/edunfs/mirrors/si...4/live-cd-9.2/ and just download the SUSE-Linux-9.2-LiveCD-64bit.iso file (611mb) but give it just a minute then cancel.
I'm around the 0.99MB/sec and 1.04MB/sec.
have to say that I find speed test sites are mostly unreliable sources really.