I have been running an Admin account and a Daily (non-admin, managed) account since forever. There have been a few apps (including each component of Macromedia Studio 8), installed through my Admin account, that I have not been able to run from my Daily account ("You do not have sufficient priveleges etc.."). This became a major headache and I Googled, looked through these forums, everything, to try and give my Daily account permission to use these apps. No luck. I tried setting permissions for the relevant folders/files through Terminal - no luck. Then I came across a good hint from Frankblundt from Macrumors in this thread, but BatChmod didn't work. But, following on from his good suggestions, just fiddling around, I made my Daily account an Admin account by clicking on the box "Allow user to administer this computer" in Sys Preferences >>User Accounts. After that, all was sweetness and light and my apps worked in my Daily account. Then, when I went back into Sys Preferences and reset my Daily account to its previous managed state, by de-selecting the box above, ALL of my apps still worked! I had gone from state 1, adjusted to state 2 and then back to state 1, just by checking/unchecking a wee box, but the effects have been dramatic. How did it happen? Any ideas?