The_Unbeliever
Honorary Master
We had a 64k Diginet line at the old offices - and it sucked.
When uncapped ADSL packages became available, we migrated over to such a package - and terminated the 64k line, and haven't looked back ever since.
Sure, we also had our disconnects, but these rarely lasts longer than a day.
So whoever got suckered in believing a 64k dedicated Diginet line should be faster than a 512k ADSL line ought to be given some more sense with a cluebat
Heck, you do get 384k uncapped which is faster and cheaper than that slow monstrosity! 
When uncapped ADSL packages became available, we migrated over to such a package - and terminated the 64k line, and haven't looked back ever since.
Sure, we also had our disconnects, but these rarely lasts longer than a day.
So whoever got suckered in believing a 64k dedicated Diginet line should be faster than a 512k ADSL line ought to be given some more sense with a cluebat