Except browse, download, game, stream video stream music, make VoIP calls, use Skype, upload as normal etc.
What you can't do is download Linux ISOs as fast as you can at other times of the day.
browsing on a 1mb/s connection is terrible. It actually feels like dial-up. Skype chat is fine, but calls are a totally different story.
I'm going to disagree right back at ya...
Even if it feels like dialup to you, most people (not saying you're one) don't know what dialup feels like, and of those that experienced, most can't remember it. I've owned a 300bps acoustic and a 1200/75 modem and I've been using the net since the late 80's. 1mbit/sec is quite reasonable to browse on, even today, and you'd be AMAZED at how low the bitrate is for a lot of stuff people seem to think uses lots of bandwidth.
What you probably don't have access to is a system which reports the average download speed of a number of popular websites around the world to an array of NZ based probes and which shows that you don't have to get too far offshore before the real world throughput in browsing is lower than 1mbps.
What I won't dispute is that ALONG WITH the slower than usual throughput there may be other issues which could impact the usability of some apps.
Browsing on a solid, stable 1mbit connection is fine. What I don't know is the full characteristics of the line and TCP behaviour that's occurring.
Cheers - N