No, I have installed Flash, and I keep it up to date. My problem is not YouTube, that was just an example. I get error messages telling me that the web sites are not secure, coincidentally after updating crypto packages and Firefox. I don't believe that YouTube is insecure, hence the problem. Not sending money through PayPal could be a crypto problem, too. Mark AllumsMaybe this is related to libns3 that someone mention, but we have to get it from unstable? On wheezy, how? Thanks. Cheers, Gene HeskettInstalling libnss3 from sid/unstable solved the problem of web sites unavailable with a security-related error message for me. Enable Jessie, stretch, and/or Sid on your system by putting the appropriate line in your /etc/apt/sources.list, such as: deb http://ftp.us.debian.org/debian/ sid main non-free contrib and do apt-get update (Remove the line -- or comment it out -- after you are satisfied you are done. Otherwise, all your updates will come from Sid--probably not what you want.) Mark AllumsThat doesn't float unforch: Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: libdbus-1-3 : Breaks: dbus (< 1.9.16-1~) but 1.6.8-1+deb7u6 is to be installed libfontconfig1 : Breaks: xpdf (<= 3.03-11) but 3.03-10 is to be installed libglib2.0-0 : Breaks: glib-networking (< 2.33.12) but 2.32.3-1 is to be installed E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages. So I've now commented that line back out of /etc/apt/sources.list.
Your attempt ran into some requirements that are prerequisites for libnss3. For instance, dbus needs to be a certain minimum version, and wheezy is too old. You will have to install another browser (i suggest opera for linux. google chrome is another option, unless you prefer a free software option.)
An alternative is to try upgrading to Jessie, and then trying to install libnss3.
Good luck Mark Allums