Firefox page captures sometimes fail with an "out of memory" error temporary fix edit

https://addons.mozilla.org/en-US/firefox/addon/pagesaver/

Note: we are aware of a problem where, on some Windows systems, page captures sometimes fail with an "out of memory" error. This is caused by a Firefox bug that has been fixed; the fix should be included in Firefox 8. In the meantime, please refer to the Known Issues and Limitations for more information including a temporary workaround for this problem.

http://pearlcrescent.com/products/pagesaver/doc/#knownissues

With Firefox 4 and newer on some Windows systems, attempts to capture a page that is taller or wider than 8,192 pixels may fail and an "out of memory" error will be reported. This is caused by Mozilla bug 649924 which occurs when hardware acceleration is used. To work around this problem, follow these steps to disable hardware acceleration:

1. Open the Firefox options and view the Advanced panel.
2. Within the General tab (Browsing section), uncheck the Firefox option named "Use hardware acceleration when available".
3. Restart Firefox.

Uncheck the Firefox option named "Use hardware acceleration when available":