I have launchy version 4.2.0 installed and I updated the update.rdf file on mozdev with information about version 4.2.1, but Firefox wont update it I think the cause of this is that mozdev is using mirrors. At least this is what the log says: ---------------------------- Datasource: Update Started ---------- Datasource: Addon Update Started: launchy@gemal.dk ---------- RDFItemUpdater:checkForUpdates sending a request to server for: http://downloads.mozdev.org/launchy/update.rdf?id=launchy@gemal.dk&idversion=4.2.0&app={ec8030f7-c20a-464f-9b0e-13a3a9e97384}&appversion=3.0b5&appOS=WINNT&appABI=x86-msvc, item = ({id:"launchy@gemal.dk", version:"4.2.0", installLocationKey:"app-profile", minAppVersion:"0.7", maxAppVersion:"4.0", name:"Launchy", xpiURL:"", xpiHash:"", iconURL:"chrome://mozapps/skin/xpinstall/xpinstallItemGeneric.png", updateRDF:"http://downloads.mozdev.org/launchy/update.rdf?id=%ITEM_ID%&idversion=%ITEM_VERSION%&app=%APP_ID%&appversion=%APP_VERSION%&appOS=%APP_OS%&appABI=%APP_ABI%", updateKey:"", type:2, targetAppID:"{ec8030f7-c20a-464f-9b0e-13a3a9e97384}"}) ---------- Security Error: Content at http://downloads.mozdev.org/launchy/update.rdf?id=launchy@gemal.dk&idversion=4.2.0&app={ec8030f7-c20a-464f-9b0e-13a3a9e97384}&appversion=3.0b5&appOS=WINNT&appABI=x86-msvc may not load data from http://mozdev.mirrors.webname.dk/launchy/update.rdf. ---------- Error: no element found Source file: http://downloads.mozdev.org/launchy/update.rdf?id=launchy@gemal.dk&idversion=4.2.0&app={ec8030f7-c20a-464f-9b0e-13a3a9e97384}&appversion=3.0b5&appOS=WINNT&appABI=x86-msvc Line: 1 ---------- Datasource: Addon Update Ended: launchy@gemal.dk, status: 4 ---------- Datasource: Update Ended ------------------------------------------------- Note the: Security Error: Content at http://downloads.mozdev.org/launchy/update.rdf?id=launchy@gemal.dk&idversion=4.2.0&app={ec8030f7-c20a-464f-9b0e-13a3a9e97384}&appversion=3.0b5&appOS=WINNT&appABI=x86-msvc may not load data from http://mozdev.mirrors.webname.dk/launchy/update.rdf. Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9b5) Gecko/2008032620 Firefox/3.0b5 ID:2008032620