Delete update problems on next try

Every update attempt during one session is recorded in the error log. When you
try another update its messages are put below the old ones.

When I try a lot of updates that I have to scroll down to the end every time. I
also get confused when I see an error message right after clicking update. Then
I realize that I have to scroll down

Is this really necessary or can you maybe delete the error messages when someone
starts the next update?