IPhone :: Multitasking On IOS4 Was Designed Wrong?

i had multitasking before ios4, i used backgrounder.when ios4 came out i unjailbroke because steve told us all how much more efficient his multitasking was. my main problem is that now when i close an app, it doesn't actually close. yes i know this is so i can multitask, but why do i want to multitask every single app i open! i end up with loads of apps "open" and my phone runs slow, every few days i notice the slow, either when an app tells me i am running out of memory, or when i unlock my phone it takes a bit longer to load the unlock screen.i then have to close all my apps which usually freezes for a few seconds while closing them all.now i can just about manage this, but my mum and dad (both owners of iphones) and happy with apples usual simple approach find it a little complicated when and how to close the apps that they have opened (i just tell them when it gets slow, restart it).

solution?:

backgrounder i have to say, worked better.when i clicked home, my app closed (gone! no memory), and lets say i was in trails and wanted to switch to my music, i just held the home button and that's it, backgrounding was activated, and only trails was taking up my memory, not some game from 2 days ago, or Internet, or the odd utility app, etc. anyone else either have this problem, or think that apple should update their multitasking feature.