all bookmarks from firefox gone?

hey guys i have updated my firefox to 3.5.2 and after installing it everything works great but all my bookmarks are gone

dont know what is wrong

can some1 help me with this coz i have no idea

iam on xp

il tell you where they are http://kb.mozillazine.org/Profile_folder
Press [Windows Key]+[R] → Type in %APPDATA% → click OK : then look it will bring you in application data folder then go there
MozillaFirefoxProfilesxxxxx.defaultbookmarkbackups