My FF 4.0.1 was working fine, until a problem arose (discussed in the Chrome and Safari newsgroup, because it seems tied, somehow to Chrome). Firefox 4.0.1 crashed three times in a row, never showing up. The first two times the Crash Reporter failed to send, sending my report only on the third crash. I had opened the Task Manager, and with each crash the plugin-container.exe appeared multiple times. At one time a box indicating that there was a problem with Quicktime initializing showed up.
I have never moved from using 3.6.17, keeping 4.x only on approval, but it does not look good.
But would this be applicable to my PC?
UserAgent: Mozilla/5.0 (Windows NT 5.1; rv:2.0.1) Gecko/20100101 Firefox/4.0.1
A minority may be right, and a majority is always wrong
~ Henrik Ibsen
WinXP, SP3, 512 MB, SM2.17.1, FF21, TB17.O.5, IE8.0, Google Chrome 26, Ghostwall , Kingsoft5.6, JRE1.7_21.