Sebastian80, you have hit the nail on the head with;
"This whole thread shows what's wrong with our sport. Half the population in this country has a BMi of over 30 and yet some of you are belittling and humiliating someone who's got outside and covered 26 miles under their own steam because their time doesn't meet your perceptions of having achieved something."
I lurk on these forums, I don't feel that generally I want to contribute or ask questions as I don't want to stick my head above the parapet and get shot down for my "meagre attempts" at running/jogging/walking. I also did Brighton, at a similar time to the OP and I am still proud of what I did - as this time last year I had not run for over 30 years (since at school) and hopefully this is only the start of my road to better times.
Yes the OP was totally asking for trouble with the post at the start of this thread, however it was a knee jerk reaction to the advice measured out previously. The adage stands that don't ask for advice if you're not willing to hear the answer - however there are ways of answers being constructive rather than mocking.
...anyhow I'll slink away again, I won't post questions, I'll go back to lurking as I feel that that is the safest way for the novices here.