I have been seeing a lot of people lately saying their connection is quiet slow.
If you are on a wireless usb connection with certain internet providers ( Vodaphone , Virgin to name just a couple) you will indeed have slow internet and is no match for a ADSL2 connection which comes through your phone line.
If you want a Mobile Broadband solution I currently recommend the mobile solutions from Telstra for speed and reliablity.
However there are certain internet providers that do not notify you if you can swap plans to a faster speed when you are on a ADSL connection.
Check what plan you are on.
There are some providers that still have people on a 256k to 64k plan and claim this is broadband.
This is not broadband and in most cases a simple contacting of your ISP can rectify this within the day and put you on a realistic speed ,3MB plus.
The reason is that you have not checked with your ISP and they in most cases seem quiet happy to leave you on an “old ” plan and with some ISPs moving your plan can actually result in a decrease in your bill.