Why do I get them? Do they go away? Thank you
You may be getting a ladder effect from dropping stitches. Dropped stitches will look like this:
There are some great instructions for picking up dropped stitches here: http://www.jimmybeanswool.com/secure-html/onlineec/instructionalArticle.asp?iaid=23
and some videos here under fixing mistakes: http://www.knittinghelp.com/videos/knitting-tips
Is the laddering due to working on dpns?
Yes its because of working with dpn's.
How to avoid ladders on DPNs (double pointed needles)
I've been able to minimize laddering by pulling tight on the yarn on the second stitch on the dpn. Another trick is to convert dpns to magic loop, using a circular needle with a very flexible cable (I like the KnitPick's Harmony circulars).