If the solution being proposed is 'turning off Flash' that is not a good solution.
The solution being proposed is to turn off Flash only long enough to expose the menu so you can get to the menu item and bookmark it. (Reading the actual, entire solution helps.) Better yet: Update to a current version of Firefox, which also solves the problem. Then you can also run Adblock Plus, which will really
solve the problem.
Btw: There are good reasons for turning off Flash and leaving it off: It's an exploit/vulnerability hole of epic proportions. It, along with many of Adobe's other products (incl., I would note, AcroRead and associated PDF applications) regularly appears on exploit risk assessment warning lists. It's almost as bad as Microsoft's ActiveTrojan, IMO. IMO it's Evil, and I utterly detest it.