I have to admit that i did my masters 3 years after finishing my degree and after doing teaching so it seemed no harder than my last year of degree... I was also sponsored thru my masters so worked a lot harder!!!
Seems like the consensus is that a masters is V.hard.... But remember, mine was an MA so not as technical as Meng or Msc i shouldnt think... If i had done a masters straight after my degree, it probably would have been a 'mare as i swore that i would never do another dissertation after my first but have ended up doing a 2nd!!!