I have an original MBA and a iMac 27 inch desktop. Both have been unstable since installing Lion. I have to repair disk permissions on a daily basis (less frequently on iMac) when files won't open, or trash won't empty or my trackpad will no longer enlarge the picture on the screen (or other misbehaviors). It fixes the problem but its very annoying and time consuming. Even after repairing disk permissions a few hours before, there are usually about 20 or thirty lines of repaired permissions each time I run the utility. I recall that 10.3 had problems that required frequent permission repairs but not to this extent. I did a quick search of the forum but didn't pull up anybody else with this complaint but I didn't go through all 16 pages of forum topics, so I could have missed it. Any suggestions as to what is going on? Will 10.7.2 fix this?