
I recently switched from Zen to O2 broadband, which in hindsight was a mistake. Yes, the connection to the exchange was superquick (7mbits down/1mbit up) compared to my current 3mbit connection, however I found O2's dns servers sluggish, their re-branded Thomson router flaky (and non-configurable, dns-wise), their pings high and their provision of service poor. I had always thought people were joking when they said that the internet slows down in the evenings and on wet Sunday afternoons. I've never noticed this on Zen. O2 it was plainly obvious.
However, I did not know this at the time, and so for half a month I was with O2, enjoying being able to watch HD iPlayer. The laggy Battlefield 2 had me worrying, but the occasional loss of DNS (and the lack of response from O2) forced me to decide between a more expensive, capped, yet high-uptime service or a cheap, unlimited but untrustworthy one. I chose to go back to Zen. They're expensive, but reliable. Think John Lewis.
My duck lived on Zen webspace, and so I took a backup of her (and everything else) before I switched provider. Once I'm back from my course next week, I'll put her back in her Zen garden.

