Newest update for Firefox issues??

Hi all....

I'm just checking around to see if anyone is having any issues with the latest update of Firefox?? I love using FF but for some reason, it seems to run hotter and have more freezing behavior than ever.....

I have MacKeeper, which has run and fixed any issues/junk on my computer, but I'm still having strange things....scrolling is delayed or frozen, on the trackpad where you can use thumb and index finder closed to open (which also zooms) is not working....some other random things...oh as I'm typing, the letters come on screen delayed...

Does anyone out there have any suggestions??

thanks
dawn