said by cdru:
It's a little hard to tell texture just from the picture. Almost all of my walls have a texture like that. I don't know what the technical name for the technique, but it's like they loaded up a roller too much and took a single swipe down, leaving the peaks to dry. PITA to patch or repair as you can't duplicate the texture really. Plus it makes it look like you did a chitty paint job.
Pretty standard rolled stipple finish; at least to my eyes... Basically you thin down joint compound, and roll it out with a heavy paint roller. Hides crappy drywall joints, or bad previous repairs.
And yes, damn near impossible to patch or repair, without it being PAINFULLY obvious...