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#11
I don't use Firefox very much, so am not sure if that is considered high ram usage. FF used to be very prone to memory leaks. Have a look through this for any possible help
Firefox uses too much memory (RAM) - How to fix | Firefox Help
I see where newer versions returned to the memory leak issue. People report good success with Firemin . This assumes you have a memory issue, your usage does not seem that high (my Opera is currently at 269k, and that is not unusual). High memory usage will usually not result in freezes of crashes unless it was very high, and system memory is low.
A Guy