If you are doing multiple Content Store downloads, that will definitely crash and lock up the program. This has been documented in TRS19 as well.
As has been said above, what you said here does nothing to help solve a problem if there is one.
To properly report an issue, you need to provide the steps you did to cause the problem. Perform the same steps carefully to see if the problem repeatable, not that some problems manifest themselves as a one-off situation caused by multiple events happening at once, which means reporting what else was going on.
Did this occur only in Content Manager, or while bringing up the content manager within Surveyor 2.0?
In addition to software having problems there's also hardware that can complicate things.
How much disk space remaining do you have?
How much memory in your machine?