Then the question arises: what's too long?
Don't worry about what's to long - rather worry about what is old.
This might be a good change, so you can opt for for example 10 messages per page.
It is not the number of messages that is the problem - it is the size of the messages.
10 big messages is not equal to 10 small messages.
I think anything over 10 lines that you have seen already(Old) need to be collapesed by default so that only the first 10 lines are visible. This message will then need an expand option.
Btw, it is among others, your posting which is extremely long in that thread.
I am a victim of the circumstances
- No Upload Code file ability.