> 2. On the limits tab, set Max. transfer rate to max.
> of speed desired... (mine is 900000 B/sec.

You may also use "0", which is actually a hidden feature to disable totally
the bandwidth limiter.

> Doubt this is a bug,,, its probably intentional, but
> it works just fine.

Well, bandwidth limits have mainly been implemented to limit abuses, and
mostly from beginners who just do not realize that downloading a site at full
speed can put it on its knees.

Hidden tricks to bypass these limits should not have too negative
consequences, because by nature, only non-beginners will use them.