Yes, without changing actual jobs. Mine is changed yearly, but now it was changed in May and now again today. None of my friends talk about it and I wondered if it was usual.
it's all about how the Director "sees the direction the 'library' will be going in the future' etc. in my case who is new and bright and shiny OR it can be because they want to utilize you where they see your
strengths. I don't mind change, it's being torn out of one situation and thrown into another indiscriminately that bugs the hell out of me. but i'm old and grumpy as shit.