I've been using the "KDE" desktop with the Ubuntu distro for many months. In the last few months I've seen what must be *warning* blurbs after firing off a given package. Google pops up some responses that are over my head. My friends give me an "I-don't-know" shrug in their replies. So This is the last place Ii can think of to ask.

Firefox is my default browser. In the past few/several days, whenever I exec firefox I get (initially) 4 errors on my Konsole; if I do another

% firefox &

I see:

(process:24953): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed

The only thing I can think of is to delete _all_ gnome packages. I figured I would post here before I go that route.

Anybody know??

I had the identical message on Slackware 14.1 with KDE and firefox a month ago and also, just a couple of days ago opening firefox from a terminal in PCLinuxOS with KDE. It doesn't affect using firefox in any way that I notice and I don't see any other messages. Opening opera from a terminal I get a message to run mozplugger.update but I have no problem using Opera. Konqueror opens with no warnings or messages. I did some googling on this and I'm in the same situation, I have no idea what causes it or the resolution. What are the other warnings you refer to and are they specific to any program? firefox?

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I have been seeing this for a long time. I googled the error and it seems it is a known bug in Firefox which Mozilla have no interest in fixing just now.
Edit: See here: https://bugzilla.mozilla.org/show_bug.cgi?id=672671

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There were no other strings, "WARNING"s or otherwiss. If I opened firefox from the "K" menu, this output (that's very likely sent to stderr) wouldn't be seen. {I have exec'd things from the menu and from the Konsole/xterm and by if I just type it into the Konsole, I've seen this kinds of stderr output.} Nutshell, until things blow up [!!], I'll be a happy camper. --I'm glad *somebody* has seen this before... .

Appreciate it. there were lots of times when The same things happened with my code ... but nothing that was ever published.

kline Forget Firefox it's been screwd up in ubuntu 14.04 since 17th april lts release,i also had issues,so i removed firefox and installed google chrome and none of those issues are there,i did a couple clean installs of ubuntu and nothing so got rid of Firefox and installed google chrome and i live happy ever after.