"you may not have the necessary permissions to use all the features of the program you are about to run. you may run this program as a diffrent user or continue to run the program as the current user."

                                      ok    cancel

hi.. i use firefox for last 4 years in desktop because of some problem on my p.c i delete my firefox completely on my pc.then i re download firefox 7 but some problem happen : plz help me i download Firefox then i click run the one information show me on my desktop that run as "you may not have the necessary permissions to use all the features of the program you are about to run. you may run this program as a diffrent user or continue to run the program as the current user." current user: run the program as the following user: username : password: ok cancel now what to do tell my why this happen? i delete mirefox 7 then retry 3 time but result was same so now what to do? please solve my problem....