Originally posted by Kobayashi.K In physics an event is random or it is not random. There is no state between those two possibilities. So, as I explained a 'preventable random system glitch' is a contradictio in terminis. I think we are too much accustomed to 'random' processes (in software) that are artificially created and actually semi-random. It is not possible to create a true random process with software. True random signal generators are always using a physical process, for example thermal activity from ions, or particles that are emitted from a radioactive material.
Going back to the subject, a matter of more concern is the reliability of the new firmware itself, because in the past it has often happened that within one or two days Pentax published yet another update to compensate for new errors. So that is a valid reason to delay installing the new firmware.
In programing there are no truly random things. Everything is just a result of code being processed. Stuff may look random to customer, but that's it. So in terms of software there may be preventable random.
As for the update and fear of it I kinda understand it, in complex code each fix usually breaks two other things but in most cases those new errors are more and more "random" and require less and less possible variables. I know, I do it all the time for the money
Me, being the programist I would rather update to fix common errors and risk less possible ones then not upgrade and stay with commonly occurring errors.