KillMe for me too. Been using it a lot, especially when using N97 not so long time ago.
Really helps in regaining some RAM as N97 is really prone to memory leak.
As I used my X6, I'm keeping the phone at the safe side. Minimum tinkering, and stability comes first for me. Ahh, just miles better than the crash prone N97.
Well, now I'm moving to N8 and N810 Internet Tablet combo, my inner geek started to roar once again

But N8, again, I'm keeping it at a relatively safe side. I need a reliable phone...and a camera too.
For my geeky paradise, my tablet is more than enuff.