How long do i have to wait for queuing to stop?

Hi

I have just started to use SmartFTP. I followed the tutorial, dragged my folder to Queue source and from there to my site. It is about 20 minutes - perhaps more - that there are some activities in "Global Queue" window. in the mean time I got discounnected from my server. I should add that the folder that I am trying to upload contains 4000 pages.

I wonder How long I have to wait before the start button gets enabled.

To explain all I see, some "Post-transfer" and "Pre-transfer" appears there and some question marks.