After sitting for a period of time, as little as a half hour, Toad for SQL Server freezes. Toad for SQL Server can be focused (as switching to it from task manager) but does not respond to mouse or keyboard. One has to end the Toad process from Task Manager.
The scenario happens randomly and erratically.
Any user can experience it.
Any database connection can experience it.
Any database object can be a part of the freezing.
Any Toad module can be part in the unresponsiveness.
There were no defining patterns to localize and troubleshoot the problem.