I'm having some gauge issues with my socks at the moment. I think this is mostly down to ignoring gauge. I get in a bit of a hurry and a gauge swatch seems too time consuming. Of course knitting most of a sock only to discover it needs about an inch more circumference is not exactly a time saving procedure.
Instead of ripping out and reknitting my waterfall sock I started a new pair. I'm still not sure if I am going to reknit the waterfall using the same yarn or switch to another yarn so that it doesn't feel quite so much like knitting a sock three times. In the mean time I'll knit away at this new mystery sock: