Hi, the "OOM" signature is an "out of memory" error. Apparently Firefox requested a chunk of contiguous memory and Windows indicated that it could not provide the memory. I'm not sure what to suggest, but we have an article on reducing memory use: Firefox uses too much memory or CPU resources - How to fix.

Do you let Windows handle the Page file automatically or have you set a fixed size for the Windows Page File ?

• Control Panel -> System -> Advanced -> Performance -> Settings

If you use a fixed size for the page file then try the automatic setting and let Windows handle the page file automatically.