Q: is itunes in the cloud compatible with powerpc macs?

Mine seems to be attempting to find matches for my library (not too large: 29gb) but this goes on for hours. I leave it to do its business and eventually iTunes shuts down with an error message: this application has unexpectedly shut down. I have sent the error report numerous times and relaunched iTunes. I've tried it 6 or 8 times now.

Out of interest: aren't we all directly above the center of the Earth as it is a sphere (ish) shape and all points on the surface are directly above its core?