I'm using MacBookPro6,2 / i7 / 8GB Ram.And I've been using 10.7 since I my purchased without any serious issues.
Last TUE, I did clean install & upgrade to 10.8.2 and I'm now facing on many major problems.
I was facing on hung & froshen almost 10 times, then last 3 hours ago I did clean up again and I still facing problems.
I believe a lot of ppl having the same problem like me. (I just found from googling : http://forums.macrumors.com/showthread.php?t=1462628 almost same issue as me)
Here is my installation Log:
[07/10/2012 - 2nd InstallationLog]
- Update#1 - 10.8.2
- General Configure
- Firewall = ON
- iCoud = NO
- Comodo AV
- Remote Desktop Client
- UID / PW
- Default encoding = UTF-8
- Firefox 15.0.1.dmg
- googlechrome.dmg (Version 22.0.1229.79)
- Thunderbird 15.0.1.dmg
- setup gmail mailboxes
As you all see, my system almost freshy.
I will list to the community one by one.
Starting with this:
 Reboot itself after clean installation
I was using Safari and was replying facebook then OS itself just reboot and came back saids "Your computer restarted becauseof a probelm.Press a key or wait a few seconds to continus starting up"
(I did sent info to Apple)
Retrieving data ...