Here you can see on the left a small drop of water coming out of the joint. I felt above it and it was dry so it is definitely at the joint.

This is from the bottom up. Again you can see the drop at the joint.

This picture is to ask if the knob at the right end is to turn off the water before I try and fix it?

I have no idea what I am doing so I just want to know if I can fix this myself or if I should call the dumb and dumber team to try and fix it? I really don't want them coming in here when I am not home and I know they won't try and arrange a mutual time to come and fix it. Last I knew it was they just show up on Saturday morning to come and fix whatever problem without giving notice first.
ya, that sucks. a major pro to renting is not having to deal with crap like that.
I think I'll just leave the bucket underneath and hope it doesn't get worse. I hate my building management so much.
There are a number of kitchen sink DIY instructions around the web, but Paul is right. May not be the wisest thing to mess with unknown water-spurting dragons.
I wouldn't do this without someone which know plumbing being there yo help if you break it.
The two knobs turn off water from the double sinks above in my kitchen (do you double sinks?)
It might be an easy fix but do you have a rubber gasket? Maybe the old one providing the seal has worn off? It has a similar function to the rubber gasket between the blender jar and the blade - prevents fluids from leaking and provides a tight seal.