Firefox version 33.0.0.5397 appears in windows/erdnt/cache how do I remove it

The first scan I ran with Secunia PSI 2 flagged up an old version of Firefox 33.0.0.5397 as out of date and no longer supported and recommended updating or uninstalling. I was unaware I had any old versions of Firefox installed as I am using the latest version 36.0.4 which actually appears further down the list of programmes on the PSI scan. This old version's location is also a bit strange, it appears in a cache within a folder called erdnt in windows. The file path is .... windows\erdnt\cache\firefox.exe. I have looked online for info about this erdnt folder and it seems to be part of a backup programme called ERUNT which I do not seem to have. Very strange. The current version of Firefox 36.0.4 is located in the program files where I would expect to find it.
Can anyone shed some light on this and explain why there appears to be an old version of Firefox in this odd location and if it is OK to remove it and how I go about doing so. Do I just delete or do I need to uninstall it ? What affect any action might have on the current version of Firefox that I am using ?

That is NOT a Firefox version I ever heard of, and the Firefox programs
are stored in the computers Programs Folder.
Open the folder you posted, and rename that file to fffffffffff.exe.
Use most or all of the listed scanners.
Sometimes a problem with Firefox may be a result of malware installed on your computer, that you may not be aware of.
You can try these free programs to scan for malware, which work with your existing antivirus software:
* [http://www.microsoft.com/security/scanner/default.aspx Microsoft Safety Scanner]
* [http://www.malwarebytes.org/products/malwarebytes_free/ MalwareBytes' Anti-Malware]
* [http://support.kaspersky.com/viruses/disinfection/5350 Anti-Rootkit Utility - TDSSKiller]
* [http://general-changelog-team.fr/en/downloads/viewdownload/20-outils-de-xplode/2-adwcleaner AdwCleaner] (for more info, see this [http://www.bleepingcomputer.com/download/adwcleaner/ alternate AdwCleaner download page])
* [http://www.surfright.nl/en/hitmanpro/ Hitman Pro]
* [http://www.eset.com/us/online-scanner/ ESET Online Scanner]
[http://windows.microsoft.com/MSE Microsoft Security Essentials] is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one. Windows 8 has antivirus [http://www.microsoft.com/security/pc-security/windows8.aspx#antivirus built-in] already.
Further information can be found in the [[Troubleshoot Firefox issues caused by malware]] article.
Did this fix your problems? Please report back to us!

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Firefox version 33.0.0.5397 appears in windows/erdnt/cache how do I remove it

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