As a general rule, if it`s OK when it goes into the freezer, it`s OK when it comes out. Obviously some things freeze `better` than others, but certainly as far as bread is concerned there`s no reason why it shouldn`t be OK for 2/3 months. Use it immediately when it`s defrosted (or as you say...straight into the toaster, frozen), don`t let it hang about and don`t be tempted to refreeze ANYTHING AT ALL.
As for your sausage in tomato and onion sauce....wouldn`t leave it for more than a couple of weeks if I was you, the taste may not be so good!
Most freezers indicate how long fresh foods should be kept and processed foods will have a recommended time on them too.
Hope this helps.