Hi Username,
The added features really do look stunning (the totally overhauled warp engine looks amazing) and I have high hopes for it...
Well heres my laptop specs:
I have a Dell Studio 1737
Intel Core 2 Duo T9400 (2.53Ghz, 1066Mhz, 6MB)
Memory: 4096MB (2x2048) 800MHz DDR2 Dual Channel with a 500GB Serial ATA (5.400RPM) dual HDD.
OS:Windows Vista SP2 (32bit)... I know!!!
I run it through an M-Audio Firewire audio box which has always been really good.
This laptop is more or less brand spanking new (about 2 months) and as I said before I have had no issues at all with Ableton 7.
I have been waiting to buy the Akai APC40:

This got released on Friday, so I popped up to my local music dealer and got one. I also decided to upgrade my Ableton as my version 7 was only a "trial" version
So I thought I would splash out and download version 8 from the Ableton website.
After everything was installed and running I road tested the APC40 (which was sooooooo much fun) with a few samples and a couple of VSTi's running.
On the second project I opened up I noticed that 8 seemed to be eating up a lot more CPU and the audio signal had a few glitches in it.
Then it crashed, so I had to reboot the system and then I reopened the same project... same thing.
I then systematically went through all my version 7 projects, and they all crashed after a relatively short amount of time (5-10 minutes).
I wondered whether there was a conflict with my Akai (or even certain VSTis I use) so I created a new project using only inhouse samples and instruments.
This too crashed after a while and I was extremely disappointed to have spent well over a grand and get no instant gratification out of my purchases.
There is however a beta patch (v8.0.4) on the Ableton site which I may try tonight. But looking at the bug fixes for that patch, it looks unlikely that it will remedy any of my problems!
I should have read the Ableton forums as there is a lot of chat about the unstablilty and general disappointment that 8 was shipped with so many bugs.
Although I have spoken to quite a few people who have had no issue at all with 8.
I really dont know whther Macs are having the same issues, I suggest a snoop around the Ableton forums
Anyway I am considering re-installing 7 until 8 becomes more stable. This does mena that I cant mess about with my AP40 for a bit, but it looks nice sitting there with all its flashy lights!
I would seriously stay with 7 until 8 becomes more stable. I know there is no way I would take 8 out and about just yet... I wanted to play at a mates party over the weekend, but it was never gonna happen!!!
As I said before Username, keep an eye on the Ableton forums, but going by my experience of 8, I would not guarantee a smooth transition!