I won't get into deatils again, suffice to say that my difficulties almost put me off of sewing (or at least sewing with knits) forever. Also, I almost spur-of-the-moment-bought a new used sewing machine from ebay because I thought mine was broken and I wanted to sew, now! Ah well. Luckily, the lovely Ali wrote a post about sewing with knits, which mentioned that universal needles were just as good (or better) for knit fabric as the ballpoint ones. So I put my trusty old needle-that-came-with-the-machine in an - whooohooo! - everything worked perfectly again. Turns out my ballpoint needles seemed to be a fraction longer than the normal ones, resulting in lots of torn thread and lost stitches...
So I finished my skirt, and while it's just about as far from perfect as possible while still being remotely wearable, I like it and it feels very comfy and summery. I'll probably buy some more of this fabric (or some similar one in red or green) and sew this skirt up again - maybe hem it with some nice red satin bias tape, to make it pop a little more.
I did learn some things on this, mainly that I still have a lot to learn about sewing with knits and also not to throw your towel too early. And: always hem a (roughly) circle skirt with bias tape (or are there other options that work well?) (Also: I need to find a nicer location to photograph my me-mades...)
So now I'm back in the sewing game and since I've got my very last end-of-term exam tomorrow, I might just succeed in finishing my summer essentials by the beginning of August... :-)