"teething problems"

hello everyone,

i've seen this around a bit and I think it carries the meaning of a severe maybe persistent problem.
a check in the dictionary reveals teething has all to do with teeth and nothing more.

could someone explain its usage to me?
is it correct to use "teething" to describe problems unrelated to dentistry?

a google search provided mixed results, with both instances of its usage showing up; health issues dominating the top results.

thank you.

I googled: "teething problems" slang. There were several examples of the phrase being used to mean "growing pains" relating to a new program, etc.

"North Cregg definitely have something special. On balance, mi.da:za is even better than their terrific debut CD. All the teething problems have been ironed out, and the music is first class. I can't see any reason not to buy this one: there's even an explanation on the back for those who don't understand the title! ..."