[CentOS] Segmentation fault using flash-plugin under CentOS 5.3

Hi all

I have a very strange problem on my CentOS 5.3 laptop. I have installed latest firefox version from updates repository (3.0.7) with flash-plugin downloaded from adobe website. When i open firefox and i need to access to some web site with flash content, firefox crash with this message:

/usr/lib/firefox-3.0.7/run-mozilla.sh: line 131: 9133 Segmentation fault "$prog" ${1+"$@"}

Problem appears with versions 3.0.5 and 3.0.6 too. On the other hand, I have another laptop installed with RHEL 5.3 with firefox and flash-plugin (but this flash-plugin is installed from redhat repository - rhn) and this problem doesn't appears ...

Where is the problem?? Maybe is it a bug with firefox under CentOS only??

Thanks.