Noticed lately that pulling into my driveway... the rear suspension creaks a little when it comes from the road into the start of the driveway..the driveway is a little higher than the road and i hear a creak sound. also noticed that coming to a sudden stop at low speed and the weight of the car shifts to the front the rear suspension also creaks a little. is this normal and just me being overly picky because its a lexus? or is there a possible issue... also the days this happened it was pretty cold here so don't know if its a factor but never heard it before... thanks!

 

I've noticed it a little in extreme cold weather.
However, I've also changed my suspension in and out 3 or 4 times from stock.
Shouldn't normally happen. If it's really THAT loud for you, then I would suggest having someone taking a look at them. Likely that a bolt is just a tad loose.
You'll be alright.

 

There are few threads regarding to the leaky rear shocks. Check if you have oil running down on the shocks and notify your dealer.