Anyone else seeing Firefox disappearing/reappearing intermittently when under load

It just blinks away and I'm looking at whatever else is on my desktop, behind where it was. I'll momentarily think I crashed Firefox, but before I can do anything--it's back. This may happen several times in the span of 1/4 minute, and it's usually when I'm stressing my poor system and running short of memory. A brief freeze up, especially if firefox knows it's on hold by showing a throbber--is okay, but to appear to disappear is too much. It's a poor quality response and needs improvement... unless I am the only one seeing it.

Try to create a new profile as a test to check if your current profile is causing the problem.
See "Creating a profile":
*https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues
If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over the problem
*http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

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