hi rvandaelejr, could you provide your latest few submitted crash reports? please enter about:crashes into the location bar, copy the latest few report ids from there starting with bp- & paste them here into a forum reply in text form. this will give us a better understanding what may be triggering those crashes. if you just submit crash reports, you most likely won't hear anything back on those - they get analysed in bulk and developers work on fixing common issues, but there will be no follow up on individual reports.

bp-d5f504c8-8d52-4287-bbcf-719922160501

Signature: OOM | large | mozalloc_abort | mozalloc_handle_oom | moz_xrealloc | nsTArray_base<T>::EnsureCapacity<T> | nsTArray_Impl<T>::InsertElementAt<T> | nsStreamConverterService::AddAdjacency

Total Virtual Memory 4294836224 Available Virtual Memory 283668480 System Memory Use Percentage 47 Available Page File 46157582336 Available Physical Memory 18117271552 OOM Allocation Size 20971520

ltc_help32-111387.dll = not listed NOTE; ltc_help64-96675.dll = Raptr In-Game Overlay

MCTHOOKKEY.dll = MCT MCTHOOKKEY http://www.file.net/process/mcthookkey.dll.html claims; Most antivirus programs identify mcthookkey.dll as malware.

aticfx32.dll = AMD Inc Radeon DirectX 11 Driver = Advanced Micro Devices

MCTU.dll = Important: Some malware disguises itself as mctudll.exe http://www.file.net/process/mctudll.exe.html

msmpeg2vdec.dll = Microsoft DTV-DVD Video Decoder

IPSEng32.dll = Symantec Intrusion Detection

icudt56.dll = International Components for Unicode = The ICU Project

You may have ad / mal-ware. Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.

Firefox uses too much memory (RAM) - How to fix This article describes how to make Firefox use less memory to make it run faster and prevent crashes.

https://support.mozilla.org/en-US/kb/firefox-slow-how-make-it-faster

https://support.mozilla.org/en-US/kb/firefox-uses-too-many-cpu-resources-how-fix

https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding