We have received a number of feedback from those who have downloaded Mac OS 10.7 Beta (Lion) that the beta version is not quite stable.
There are a few problems encountered with the beta version:
1) MacBook not able to go to "sleep" properly
2) MacBook "fan" will spin very fast
3) Not able to boot up
We would like to advise all students that the Apple Centre does not support Beta version of OS and therefore any restoration (apart from data recovery cost) is subject to charges.
Thank you for your cooperation.