Cant run firefox anymore...

Run ESET Online Scanner

On
Hold down Control and click on ESET Online Scanner to open ESET OnlineScan in a new window
Click the button
Check YES, I accept the Terms of Use.
Click the Start button.
Accept any security warnings from your browser.
Under scan settings, check "Scan Archives" and "Remove found threats"
Click Advanced settings and select the following:
° Scan potentially unwanted applications
° Scan for potentially unsafe applications
° Enable Anti-Stealth technology
ESET will then download updates for itself, install itself, and begin scanning your computer. Please be patient as this can take some time.
When the scan completes, click List Threats
Click Export, and save the file to your desktop using a unique name, such as ESETScan. Include the contents of this report in your next reply.
Click the Back button.
Click the Finish button.
On or
Click on http://download.eset.com/special/eos...taller_enu.exe to download the ESET Smart Installer. Save it to your desktop.
Right click on choose on your desktop
Check YES, I accept the Terms of Use.
Click the Start button.
Accept any security warnings from your browser.
Under scan settings, check "Scan Archives" and "Remove found threats"
Click Advanced settings and select the following:
° Scan potentially unwanted applications
° Scan for potentially unsafe applications
° Enable Anti-Stealth technology
ESET will then download updates for itself, install itself, and begin scanning your computer. Please be patient as this can take some time.
When the scan completes, click List Threats
Click Export, and save the file to your desktop using a unique name, such as ESETScan. Include the contents of this report in your next reply.
Click the Back button.
Click the Finish button.

You're welcome . Proceed with the online scanner to see if you're clean