> Does anybody know a way to convert six cubefaces to one single 
> spherical image? Can this be done with panotools.. or is it simply 
> impossible?

This script should stitch them:

p w3200 h1600
o f0 r0 p0 y0 v90 -buf
o f0 r0 p0 y90 v90 +buf -buf
o f0 r0 p0 y180 v90 +buf -buf
o f0 r0 p0 y-90 v90 +buf -buf
o f0 r0 p90 y0 v90 +buf -buf
o f0 r0 p-90 y0 v90 +buf

where the images are in turn:
front
right
back
left
up
down

-Peter