We really dislike toilets that flush slowly. You have to wait an eternity for all the water to go down, and then it slowly muddles on to an annoyingly weak flush that doesn't make all the er, stuff, go down. Toilets weaken with age, making the flush weak, but there is a way to fix a slow toilet.
This plumbing video teaches you how to add some power to your toilet flush. You will need a small mirror, gloves and thick wire.