If you are in an oversubscribed area (one interpretation given your stated symptoms), your chances of seeing a robust fix within the lifespan of the universe is almost exactly 0.
Since Jan 2011 I've seen 3 months of 'acceptable' service on my VM connection (50Mb, mostly) - Cambridge area. I don't even have a fix date from them to miss and push back yet.
I sadly have to backup your statement.
In 6+ years of using VM(ntl) (cant remember exact period of time) I reckon I have had about 3-4 months of relative uncongested service, that was when they did the uplift work and then took 3-4 months to activate the new speeds, so the upgrade work they did for the 10:1 uplifts was proper congestion relief but of course wasnt done for that purpose it was so they could market better speeds. When they did activate the new speeds it was still not too bad tho, the killer was when they took on 100mbit customers and now my congestion is quite bad again.
The company has a chronic history of under estimating bandwidth needs for high density areas, or they estimate it right and the current congestion levels are deliberate. I still have the opinion that once an area gets bad enough, its like that for life with small periods of relief immediatly after upgrades have been carried out but since they drip feed upgrades congestion will inevitibly come back. The upgrades can be so small and delayed that they often just lessen congestion rather than get rid of it.
We will soon find out how effective the planned upgrades will be for the speed doubling, extra DS channels are been added although so far I have only seen one single person get 8 channels, most seem to have 5 or 6. I have yet to see anyone get US channel bonding even tho thats planned. The new STM will lower utilisation from top tier customers however its upstream limits remain very generous meaning the relief will not be significant, in addition docsis1 customers will be moving over increasing utilisation, probably more than what the new STM saves.
I just hope BT get infinity out as planned here in sept and its good enough for me to ditch VM. As bad as VM is its still overall better than a dodgy adsl service on a long line even when congested.
Edited by Chrysalis (Tue 10-Apr-12 00:12:26)