Firefox crashes

In a multiple user environment it may be worth supporting and installing Firefox ESR

• http://www.mozilla.org/en-US/firefox/organizations/

I am no expert on Crash reports but the ID you linked probably relates to a memory problem. Test in Firefox's safemode and with all pugins disabled do you still get crashes ? If so please post 4 or 5 crash IDs from a single machine in Firefox's safe mode and with all plugins disabled.

Do you notice any pattern to the crashes is any particular site involved ?

For forum cross referencing purposes

• Your Report for Crash ID: bp- a7d6dcd6-eabe-4cd5-b4ea-551cc2140221
• Crash Signature: mozalloc_abort(char const* const) | mozalloc_handle_oom(unsigned int) | moz_xmalloc | nsHTTPCompressConv::OnDataAvailable(nsIRequest*, nsISupports*, nsIInputStream*, unsigned __int64, unsigned int)

Yes, this is an OOM (out-of-memory) issue: OOM Allocation Size: 1073670

If this happens with only System Memory Use Percentage of 75 then this would indicate that there is a lot of memory fragmentation and that there isn't a contiguous block available that is large enough.

Create a new profile as a test to check if your current profile is causing the problems.

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 some files from an existing 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