IRBs are a joke and why people hate doing research
I fully understand that there needs to be some way of ensuring research ethics. I'm not arguing against that. At the same time though, IRBs are where research goes to die and in their current form they do more harm than good, especially for grad students who are required to submit to the IRB as part of their thesis.
4 to 6 weeks minimum (more if they're busy) for an initial review of a minimal risk study (no greater than everyday life) is completely unacceptable. Even more unacceptable is that their studies require the consent forms for those minimal risk studies to be 3 pages long single spaced and they automatically reject all first submissions (but make you wait 4 to 6 weeks for that rejection).