I am sorry. I was busy for work these days, so I reinstalled fedora......I think it will happen if I install some updates......Thanks all the way!<br><br><div class="gmail_quote">2011/2/24 JB <span dir="ltr">&lt;<a href="mailto:jb.1234abcd@gmail.com">jb.1234abcd@gmail.com</a>&gt;</span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="im">Yunchi Wang &lt;wyunchilovechina &lt;at&gt; <a href="http://gmail.com" target="_blank">gmail.com</a>&gt; writes:<br>

<br>
</div>&gt; ...<br>
<br>
Make sure package ABRT is installed.<br>
$ yum info abrt<br>
$ yum list abrt<br>
<br>
Run your program from menu System-Preferences-Desktop Effects or from xterm.<br>
This should produce a dump (backtrace) that will be filed automatically, or if<br>
not then you can extract it manually from ABRT with copy/paste (look for<br>
backtrace, in particular):<br>
<br>
<a href="https://bugzilla.redhat.com/" target="_blank">https://bugzilla.redhat.com/</a><br>
<br>
There are already desktop-effects related bugs (you can browse them by key word<br>
desktop-effects, if you want to get familiar with how to file a bug, etc).<br>
<br>
Please attach that desktop-effects.out file to the assigned Bug Report #  as<br>
well - it may help.<br>
<div><div></div><div class="h5"><br>
JB<br>
<br>
<br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br>a green hand of opensource and linux<br>