How long should I wait for an IEEE conference proceeding? I have an accepted paper in TrustCom 2014. The conference was held several months ago. However I could not find any information regarding the proceedings. They do not answer email. Is it normal? In general, how long after a conference are proceedings published?
For IEEE conferences (such as this one), there is a relatively standard procedure:


You should have gotten your own copy of the proceedings at the conference itself: typically with IEEE conferences these days this will be on a USB drive.  By the standard IEEE copyright policy, you can feel free to post your preprint on your website.
The full proceedings typically appears in IEEE Xplore a few months later, but there is a lot of noise and randomness in this timing.  IEEE is very good at maintaining communication and schedule before the conference to ensure the proceedings are ready for distribution at the conference, but are much more lax in following through after the conference has completed.