BlackestNightmare

I don't know why, my viewer frequently freezing/crashing after a while on being on it. I mean like, within several mintutes the viewer would freeze on me and I get a notice that my driver has stopped working and recovered. (but my viewer still frozen) The thing is that it didn't happen that much previously, it just happened today. My driver is updated so I don't think that's the problem and I just did an update to the viewer, but it didn't help either. I don't know what type of viewer it is, the only thing I know is that it's the one after you join Second Life(Singularity I think?) Please help!