[Bug 677551] [NEW] pressing Enter in a large textarea is very CPU intensive with Firefox 4.0

[Jamie Strandboge]

Public bug reported:

Binary package hint: firefox

On up to date natty with Firefox 4.0, pressing Enter in a large textarea
is very CPU intensive.

Go to:
https://wiki.ubuntu.com/MozillaTeam/test677551

Edit the page, and then click 'Enter' a few times at the top of the
editing textarea. The CPU will spike. Holding 'Enter' pegs the CPU
entirely (there is no need to commit your changes). This is a regression
over 3.6 on Ubuntu 10.10.

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  Binary package hint: firefox
  
  On up to date natty with Firefox 4.0, pressing Enter in a large textarea
  is very CPU intensive
  
  Go to:
- https://wiki.ubuntu.com/MozillaTeam/testpage
+ https://wiki.ubuntu.com/MozillaTeam/test677551
  
  Edit the page, and then click 'Enter' a few times. The CPU will spike.
  Holding 'Enter' pegs the CPU entirely (there is no need to commit your
  changes). This is a regression over 3.6 on Ubuntu 10.10.

** Description changed:

  Binary package hint: firefox
  
  On up to date natty with Firefox 4.0, pressing Enter in a large textarea
  is very CPU intensive
  
  Go to:
  https://wiki.ubuntu.com/MozillaTeam/test677551
  
- Edit the page, and then click 'Enter' a few times. The CPU will spike.
- Holding 'Enter' pegs the CPU entirely (there is no need to commit your
- changes). This is a regression over 3.6 on Ubuntu 10.10.
+ Edit the page, and then click 'Enter' a few times in the editing
+ textarea. The CPU will spike. Holding 'Enter' pegs the CPU entirely
+ (there is no need to commit your changes). This is a regression over 3.6
+ on Ubuntu 10.10.

** Summary changed:

- pressing Enter in a large textarea is very CPU intensive
+ pressing Enter in a large textarea is very CPU intensive with Firefox 4.0

** Description changed:

  Binary package hint: firefox
  
  On up to date natty with Firefox 4.0, pressing Enter in a large textarea
- is very CPU intensive
+ is very CPU intensive.
  
  Go to:
  https://wiki.ubuntu.com/MozillaTeam/test677551
  
- Edit the page, and then click 'Enter' a few times in the editing
- textarea. The CPU will spike. Holding 'Enter' pegs the CPU entirely
- (there is no need to commit your changes). This is a regression over 3.6
- on Ubuntu 10.10.
+ Edit the page, and then click 'Enter' a few times at the top of the
+ editing textarea. The CPU will spike. Holding 'Enter' pegs the CPU
+ entirely (there is no need to commit your changes). This is a regression
+ over 3.6 on Ubuntu 10.10.

-- 
pressing Enter in a large textarea is very CPU intensive with Firefox 4.0
https://bugs.launchpad.net/bugs/677551
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