do not update to Mountain Lion extremly slow it is seriously getting me angry not able to do anything just a tip

Hmm yeah i was wondering about that. however, i did just buy and install 8gb of ram so i hope it will be ok. i originally had 4gb on my macbook pro what are your system specs?

i have a 2012 macbookpro i7 and 16 gigs believe me its slow do not update

wooow.. i can't imagine my 2010 trying to survive. thanks for the suggestion

yea wait for the update you will regret it

the only thing I noticed is crap is the web browser :( could also be my net, but sometimes it just doesnt do anything! for me, it seems ok. My mac is around 2010 i think. 13 inch.

It's a good thing I ONLY use my mac for xcode! Cheers, David buzztouchmods.com

I have a 2010 MacBook and Mountian Lion is running just fine for me.

hmmm decisions decisions . if it goes back am i able to downgrade?

Im running on a retina and it works just perfectly.

dam it must be my bad luck lol just google Mountian Lion is running slow and you will se all the comments also read the reviews on the appstore

I upgraded to Mountain lion on my 2011 Mcbook pro several months ago and if anything, it is faster than snow leapord/Lion - my browser works fine and support for 2 x external monitors is awesome - i use it as my #1 workstation for everything and it performs 100% - best thing i can suggest, take the HDD out of it and toss it in the bin, spend a bit of money on a SSD, the performance increase will blow your mind!

@st726, have you updated to 10.8.2? That is supposed to smooth out performance.

@st726, have you updated to 10.8.2? That is supposed to smooth out performance.

@mitchellapps thats what i have 10.8.2 @SkullyFox i think i will invest on a SSD hard drive what hd do you have

ok im getting a little confidence to upgrade. i was also thinking that i needed to get a new hard drive. thanks for the tips! @st726 i hope you get things worked out i'll post back much later on my success/challenges

@st726 - i have a sandisk 128Gb SSD - all the RAM and CPU in the world wont help you if the read/write speeds to your hard drive are crappy - SSD will definately fix this.. Mine now runs like a champ - with 4Gb RAM and the i5 processor - and i flog the hell out of it daily..

I'm experiencing the same thing - SLOW compared to what she was, but at least can run latest version of Xcode

I finally upgraded, forced to upgrade lol.. but it works awesome. A few things to mention however: 2009 MBP, upgraded ram from 4GB to 8GB, new hard drive clean install of Mountain Lion and a new logic board. I guess that makes for brand new spanking MBP. However, I do find it faster but noticed that it drains the battery. I probably have to change that as well. But i like the new features being that I was on Snow Leopard previously. Xcode loads quickly too!