Indeed it's bizarre. I'm not using a DE, but just openbox with fbpanel and lxpanel, while the "systemmenu" is from fbpanel only. I also don't edit the menu using a menu editor. I don't have such entries for e.g. Firefox, IceCat, Qupzilla and other browsers, but Chrome is spamming the directory. I'm to lazy to read https://wiki.archlinux.org/index.php/xdg-menu, but perhaps it's related and could enlighten you. [rocketmouse@archlinux ~]$ pacman -Q archlinux-xdg-menu archlinux-xdg-menu 0.7.6.2-2 [rocketmouse@archlinux ~]$ pactree -r archlinux-xdg-menu archlinux-xdg-menu [rocketmouse@archlinux ~]$ ls ~/.local/share/applications/chrome-*|cut -d"/" -f7chrome-aohghmighlieiainnegkcijnfilokake-Default.desktop chrome-apdfllckaahabafndbhieahigkjlhalf-Default.desktop chrome-blpcfgokakmgnkcojhhkbfbldkacnbeo-Default.desktop chrome-coobgpohoikkiipiblmjeljniedjpjpf-Default.desktop chrome-nmmhkkegccagdldgiimedpiccmgmieda-Default.desktop chrome-pjkljhegncpnkpknbcohdijeoejaedia-Default.desktop [rocketmouse@archlinux ~]$ ls -Ggh ~/.local/share/applications/userapp-*|cut -d"/" -f7 userapp-Evolution-GJ53SW.desktop userapp-Mail Recipient-YZFFZX.desktop userapp-Pale Moon-3J36ZX.desktop userapp-sqlite3-S4RCBX.desktop userapp-sqlitebrowser-MGEHBX.desktop [rocketmouse@archlinux ~]$ cat ~/.local/share/applications/chrome-aohghmighlieiainnegkcijnfilokake-Default.desktop #!/usr/bin/env xdg-open [Desktop Entry] Version=1.0 Terminal=false Type=Application Name=Google Docs Exec=/opt/google/chrome/google-chrome --profile-directory=Default --app-id=aohghmighlieiainnegkcijnfilokake Icon=chrome-aohghmighlieiainnegkcijnfilokake-Default NoDisplay=true StartupWMClass=crx_aohghmighlieiainnegkcijnfilokake [rocketmouse@archlinux ~]$ cat .config/fbpanel/default [snip] Plugin { type = menu config { IconSize = 22 image = /home/rocketmouse/.customization/dark_cartoon_asterisk.png menu { name = Applications Alt+F3 icon = applications-other item { name = Applications icon = applications-other action = xfce4-appfinder } systemmenu { } } separator { } item { name = ROXTerm max icon = utilities-terminal action = roxterm --maximize [snip]

On Thu, 17 Mar 2016 13:08:50 +0100, Ralf Mardorf wrote:

So perhaps launching palemoon does it.

No, it doesn't. [rocketmouse@archlinux applications]$ ls userapp-Pale\ Moon-3J36ZX.desktop 'userapp-Pale Moon-3J36ZX.desktop' [rocketmouse@archlinux applications]$ mv -i userapp-Pale\ Moon-3J36ZX.desktop userapp-Pale\ Moon-3J36ZX.deskbak [rocketmouse@archlinux applications]$ ls userapp-Pale\ Moon-3J36ZX.desktop ls: cannot access 'userapp-Pale Moon-3J36ZX.desktop': No such file or directory [rocketmouse@archlinux applications]$ palemoon [rocketmouse@archlinux applications]$ ls userapp-Pale\ Moon-3J36ZX.desktop ls: cannot access 'userapp-Pale Moon-3J36ZX.desktop': No such file or directory

Patrick Burroughs (Celti) wrote:

On Wed, 16 Mar 2016 22:08:46 -0700 Kyle Terrien wrote:

...

So, somehow my default web browser got changed from SeaMonkey back to Firefox. (Bleh!)

[...]

In ~/.local/share/applications/ (where user-customized .desktop files go), there were several files in the format userapp-<appname>-.desktop.

userapp-Firefox-FIK3WX.desktop userapp-Pale Moon-1HNY8X.desktop userapp-SeaMonkey-YV09AY.desktop userapp-Thunderbird-PIZCZW.desktop

If I'm not mistaken, those files and their associated mimeinfo entries are created every time you set Firefox/SeaMonkey/PaleMoon as you default browser, as the mechanism of such.

~Celti

That's correct. I can confirm that if I go to SeaMonkey's Edit > Preferences and click "Set default browser", then a new userapp file is created. This userapp .desktop file is then inserted into ~/.config/mimeapps.list. Good catch, and thank you! $ ls .local/share/applications/ mimeinfo.cache userapp-SeaMonkey-45D4DY.desktop $ cat .local/share/applications/userapp-SeaMonkey-45D4DY.desktop [Desktop Entry] Encoding=UTF-8 Version=1.0 Type=Application NoDisplay=true Exec=/usr/lib/seamonkey-2.40/seamonkey %u Name=SeaMonkey Comment=Custom definition for SeaMonkey $ cat .local/share/applications/mimeinfo.cache [MIME Cache] $ --Kyle