Here is a nice little Firefox I picked up in another forum 
Internet Explorer IE loads generally quicker than FireFox FF, because a portion of IE is pre-loaded by the OS via windows "prefetch." Firefox does not use windows prefetch, but it can & will speed up loading of FF.
Right Click FF shortcut > choose properties > at 'Target' at the end of the line, which looks like "...firefox.exe" add a space plus /prefetch:1
So the end of the Target line would look like:
...firefox.exe /prefetch:1
Choose apply then OK. The second time you start FF it will be much quicker. First start of FF info is going to the OS's prefetch, for future speedier starts.

Internet Explorer IE loads generally quicker than FireFox FF, because a portion of IE is pre-loaded by the OS via windows "prefetch." Firefox does not use windows prefetch, but it can & will speed up loading of FF.
Right Click FF shortcut > choose properties > at 'Target' at the end of the line, which looks like "...firefox.exe" add a space plus /prefetch:1
So the end of the Target line would look like:
...firefox.exe /prefetch:1
Choose apply then OK. The second time you start FF it will be much quicker. First start of FF info is going to the OS's prefetch, for future speedier starts.

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