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When I installed Ubuntu 12.10, one of the benefits I was looking for was to go without restarting the OS for months. But every 2 days or so the system gets heavy and it's not the same switching between the softwares as it is during the fresh boot. I usually run multiple softwares like JDownloader, Transmission Bit Torrent Client, Firefox (5 to 8 tabs approx.), access another computer's hard drive, music player/vlc player I do need the feel to restart and I do.

A lot of times I also have trouble killing tasks, specially Movie Player. After one or two times, nighters it opens nor the task gets killed. This might be a separate issue but I mentioned anyhow.

Is it possible to go for months without restarting Ubuntu 12.10?My systcem information is attached in case

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Jdownloader is a java application... and it happens that java eats memory with time :/ Did you do further analysis at the time when the system gets heavy ? –  martin-mystere Dec 6 '12 at 16:12
It maybe the issue. I will try to find an alternate. Well, the memory stays the same 40% usage. What analysis would you recommend? –  DonChoudhry Dec 6 '12 at 16:25
I would start using top command from a terminal to get a global view of the system state when it gets heavy. –  martin-mystere Dec 6 '12 at 16:45
I am new to Ubuntu. What should I look for in the information from top? CPU usage, memory usage or what? Can I kill tasks using top command? Finally my orignal question: Is it possible to go without restarting Ubuntu for months? If yes, then how? .... Thanks for your concern and support –  DonChoudhry Dec 6 '12 at 16:58
Your original question asks "why" so I'm not going to tell you 'Yes' or 'No' and even if I wanted to, I couldn't :P In the screenshot "system monitor", you have some interesting tabs (processes, resources...) that contains almost the same information as top would provide. Go and see if somes processes gets crazy when the system gets heavy ! –  martin-mystere Dec 6 '12 at 18:39

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