I have already done some speed tests on http://www.speakeasy.net, using a different server each time. Here are some results:
Test 1:
DL - 1793kbps = 224KB/s
UL - 224kbps = 28KB/s

Test 2:
DL - 1784kbps = 223 KB/s
UL - 218kbps = 27.3KB/s

Test results on http://pcpitstop.com :
DL - 1626 kbps = 203.3KB/s
UL - 208kbps = 26KB/s

For the file on http://www.magnetmix.com/video.shtml on LW, the speed ranged from 5KB/s to 25KB/s, but the average was around 15KB/s.

I have already checked out the thread 'Configure LW for best performance', but none of the tips helped (I didn't quite understand the purpose of step (f)).

I live in Singapore, so my ISP is a local company named StarHub (http://www.starhub.com).

Thank you very much for your help birdy.

zad