Created attachment 346757 [details]
test sheet to demonstrate slow cell calcs

Description of problem:
Calculations take seconds per cell change on a tiny sheet.
Reported to Open Office as their bug # 102566 and they say its peculiar to Fedora's build.

on-Release number of selected component (if applicable):
Version is 3.0.1-15.4.fc10 


How reproducible:
AutoCalculate is ON.

Note at opening the sheet, how long "calculating" and "adapting row height" takes at the bottom left.

Hit CTRL-END just so that you confirm how tiny this sheet is.

Goto E2
Enter an integer other than the one already there and watch how quickly the
sheet is calc'd.
Goto E2
Enter an integer other than the one already there, and now watch how slow it is.

No matter how often you alter E2, speed remains slow.

Now, Highlight A15:T15, right click, copy.
Goto A17, right click paste.

Goto E2
Enter a number other than the one already there.
Still very slow.
Highlight A18:A250, right click, paste.

Goto E2
Enter a number other than the one already there.

Slowness is gone and the sheet is 20 times as large as it was when it was slow.


But wait - there's more.

Put the mouse on the row marker for row 16 and drag the mouse down to row 250.

See how many "calculating" messages fly by and how incredibly slow this is?

When you finally have rows 16 thru 250 highlighted, right click, delete row.

Go back to E2
Enter a number other than the one already there.

Back to being slow and the sheet is a small fraction of what it was when it was
faster.



Steps to Reproduce:
1. Every time. Just repeat steps above
2.
3.
  
Actual results:


Expected results:


Additional info: