Its been eighteen months since I last tried my luck and I think I"m getting duller with old age, so I clicked through to http://www.intelligencetest.com and got myself 136.
There's only twenty or so questions, briefly covering logic, spatial, visual, pattern, numbers and grammar. I think I slipped up on two of them, an anagram I couldn't be bothered with and a number sequence my heid couldn't runs the sums for.
That 136 brings my long term average up to 129, or ignoring the old drunken student score of 78, it brings my average down to 138. Age is dulling ma heid.