I have a desktop and laptop both running Firefox and I am only having this problem on my desktop, so I am certain it's related to something on the desktop... Firefox keeps wanting to update itself to version 5.1.03 First, I get a message it wants to upgrade. I let it. After I close Firefox and restart it, I get a message saying something prevented the software from fully upgrading. So, the software does a FULL DOWNLOAD, I install the update and all is well for 2-3 days.... ...then the same thing starts happening again. It says that Firefox want to upgrade to the same version, it doesn't install right the first time, then does a complete download and install and all is fine for another 2-3 days. Any idea what may be going on?