Indicator light: The red light of my rancilio machine goes on, immediately after i start making espresso or steam milk. The machine was warming up first for 15 minutes, red light out.

SOURCE: Makes espresso, coffee, water, but will not steam

The pump has gone bad - through use. This is a common problem, and has to do with the "seals" that are in the pump. Since the pump generates high pressure and heat, over time, the seals will fail, and will be unable to generate enough pressure and heat to create steam. The only remedy is to have the pump replaced through the Breville Out of Warranty repair centers.
http://www.brevilleusa.com/support/service-centers.pdf

SOURCE: Hi, we have a Krups

suggestions include very cold milk.  having the nozzle just barely in for frothing.  
On my model there's an air passage in the nozzle that foams quite nicely.  If you have that too, it might be clogged with milk.  You have to keep these clean with every use.

SOURCE: Coffee tastes burnt/No steam for froth

I don't know about the burning business but I had the same problem with the steam wand. the first thing I did to solve this problem was to take small object like a needle or safety pen and insert it into the base of the steam wand. (I have feeling that most problems related to the steaming wand are due to deposits clogging the wand itself.) After I cleared out as best I could I used vinegar and water to help remove any calcium deposits. Sure enough, after inserting the needle into the wand steam began to flow again.

SOURCE: espresso does not make

Does the water stop while the pump is still operating ? Is the "READY" light ON when the water stops ? You need to be more specific about exactly what the symptoms are because these machines are fairly complex and have pressure and temperature sensors to make sure the shots are consistently good. You should make sure to flush your machine regularly with descaler because scale buildup is the most common problem that you'll run into with coffee machines. You can get descaler at any decent hardware store or you can also use "CLR" which works just as well. If the pump keeps running and the water flow just stops, then I would suspect that there is a clogged line or the grind is too fine. Try pouring a shot without using the spoon to see if the water flows freely. If it flows OK, then your grind is probably the problem. If it still does not flow freely, descale the machine several times and see if that makes things better. If you've never descaled your machine, then use a strong descaler or CLR concentration and run the descaling liquid through the machine several times, or even let the descaler sit and soak the inner workings overnight, If the just pump stops prematurely during a shot, then there is probably a sensor problem with the machine. Take it in to a repair place for diagnosis. If you can't find a place that repairs espresso machines, ask the manager of your local Starbucks what repair company they use, since Starbucks stores have contracts with people to routinely service and repair their own equipment.

SOURCE: Machine no longer heats milk hot enough

Hmmm same problem here... any solutions ?