Hi Tamara-
I agree with Adam - unless you are trying to do a full export, 1300 should take about 5 minutes max.
Do you know how to customize your views (before exporting) on a smart list/campaign? That might be the issue.
The only other time that I've seen this almost never ending process happen is when you are not permissioned to do something within the systyem - instead of telling you "No you are not allowed to do so", it gives you the false sense of security that you are able to execute the action but then it hangs indefinitely.
Ping me if you want any help!
Brigid