If your computer can handle all the Java and updates, you're fine. If your computer can't it might get slower.
No, not at all. It requires no Downloading.
Runescape could be slow because of: 1) Your computer doesn't support it 2) Your Internet connection could be weak or too many people on the Internet connection at once causing you to lag or 3) You could be on a world with to many people, when this happens you go to the lobby and choose a world with fewer people on it.
Probably about 2 seconds, but if your computer is slow and internet is slow, it will lag and take up to 20 seconds, maybe even make the screen go black (this is also known as a game crash.)
If Minecraft is not running, no it will not slow your computer down.If you have a low end or older computer then playing Minecraft may slow it down a little as it's a fairly hardware intensive game. Just give it as much ram as you can and turn the graphic details down until your happy with it.The Minecraft WiKi has a lot of information on managing the game.
RuneScape doesn't give you any viruses; but it does install cache memory onto your computer to make it (RuneScape) run faster. This may slow down your computer's overall performance, since it takes up RAM and space.It is a browser based game and to get a virus you need to download the particular file, and you do not need to download anything for runescape (unless it's Java which you need to play it).Though you can download runescape client (optional have to do it manually) someone could put a virus on that other then that not possible. EDIT: to answer the question straight forward: no. I've checked with norton safe websites and its fine. no viruses, nothing.There are no viruses on Runescape. I have played for 5-6 years and i have gotten nothing. only viruses you can get is if you try to cheat by downloading an auto client or something. and something else you can consider a virus is being addicted to runescape :) and makeing runescape your life.
While it's running, yes. It will not slow down you computer unless you are actively using it.
Yes, combat arms does slow your computer down.
Yes, they can take up a lot of RAM and slow down a computer.
Any program that runs can slow your computer down, so yes.
Your computer might be slow. Slow computers cause accidents and sometimes you have to download JAVA.
will my computer kinda slowed down.
it is probably lagging because your in a populated placeor your computer is slow and have virus
If your computer loads slow, then you need to choose the lowest qualities.
No. It is the viruses you download with the songs using LimeWire that slow your computer down.
And?
No, it will not slow down your computer and no it will not give you virus
No. It is just a Java applet. While it is running, your computer may get slow, on older computers - since it is a rather large program, and due to lack of memory, mainly; this is just like your computer getting slow when running any other large program - but once you close the browser window, there will be no permanent damage on your computer.