Resetting connection ...

Hi all,

Tell me first if it is correct group for that kind of questions.

If it is not tell me which group.
So question:

what does "resetting connection" mean while loading huge
number of data into postgres. I have postgres 6.1

And second question:
while migrating from 6.1 to 6.3.2 do I have to dump my database
using tools from 6.3.2 or I can use tools from 6.1 ?

thanx
przemol