Preamble: All program updates are accepted when proposed on any of my 2 PCs, Linux or Firefox and other programs. Situation: * Many multiple instances of Firefox are launched but can't be completed on my old (11 years old) tower PC (Linux based), * seems to saturate video card with multiple instances of screens (1 or 2 minutes at most) until it prevents other programs (eg Open office) to run * Tower PC works well for other programs (open office) if Firefox in not launched * while it works well when Firefox and other programs are launched) on my light PC ASUS (also with Linux) 3 years old. Do I miss required minimal memory size on hard disk or on RAM, or is this an issue on Firefox, or...? Can anyone please help and advise? Regards