--Windows, my security software (Avast!), and my graphics drivers are up-to-date. --Firefox and my active plug-ins are up-to-date. --I have done a refresh. --I have run virus and spyware checks, and found no issues. --At this point, the crash has not happened in Safe Mode; however, some of the effects found in normal operation are occurring in Safe Mode. I will elaborate momentarily. --The RAM tests have found no errors. (I have run Dell's on-board memory diagnostics and the MemTest86+ suggested in your information.) The latest crash report is bp-097c1f55-46c0-470a-9685-8aac72151213. FireFox has been crashing with stunning frequency over the past couple of months. I've reported some smaller issues (the last one was with a growing "Bookmark All" window) but this has been getting worse and worse. Some of the crashes aren't reported, as I've had to go through Task Manager and kill the process. There doesn't appear to be a pattern that triggers the event; however, I've noticed some effects that signal that something's about to happen. The largest one seems to be an inordinate amount of memory use by the FireFox process. When I've had to kill the process in Task Manager, I've noticed that the memory usage can be as high as 2.5GB with two one-tab windows and minimal processing. The memory usage ramps up when I'm doing a lot of work (several windows with multiple tabs open) but will not go down after I've closed extra windows. My CPU fan is generally a good indicator of what's coming. It'll rev up and stay up about ten to fifteen seconds before FireFox crashes or hangs, and won't slow down for fifteen seconds after I shut it down. As I'm typing this up, I have my Resource Monitor running. I have one window with seven tabs open (all about FireFox or the related test tools), and the memory usage for this is at 1,344,104 KB. I'm not streaming or doing any steady network I/O (uploading or downloading large files, for example). These are the seven tabs: https://support.mozilla.org/en-US/products/firefox/fix-problems/crashing https://support.mozilla.org/en-US/kb/firefox-crashes-troubleshoot-prevent-and-get-help https://support.mozilla.org/en-US/questions/new/desktop/fix-problems/form?search=Firefox+crashes&step=aaq-question http://www.superantispyware.com/portablescanner.html http://www.memtest.org/ https://crash-stats.mozilla.com/report/index/097c1f55-46c0-470a-9685-8aac72151213 about:crashes Any assistance you can offer me would be appreciated. I like FireFox, but am getting annoyed with this issue. Jason A Schulz