I have a program that does some moderately serious data manipulation.
Within the code, it reads 3000 lines from a worksheet, summarizes them
into 6 columns, sorts on one of the columns, then populates a text box
with formatted output. This all takes 2-3 seconds.

I then have a simple routine that basically says:

With worksheet("Sheet1")
for i=1 to 600
for j=1 to 6
.cells(i,j)=array(i,j)
next j
next i
end with
end sub

This routine alone takes almost 2 minutes.

Is there a faster way? Seems horribly slow to just fill about 3600
cells with already-calculated values.