They've stopped.

Is it possible that there could be traces of the infection still on my external (seeing as it has been unplugged)?You can scan your external drive but first do this before plugging it in.

Panda USB and AutoRun Vaccine

Insert your external drive before you begin. Hold down the Shift key when inserting the flash drive until Windows detects it to bypass the autorun feature. This will keep the autorun.inf from executing automatically.

Download Panda USB and AutoRun Vaccine and save it to your desktop.

* Extract (unzip) the file to your desktop and a folder named USBVaccine will be created.
* Open that folder and double-click on USBVaccine.exe to start the program.
* Click Run
* Click the button to Vaccinate computer.
* Insert your USB flash drive.
* When the name of the drive appears in the dialog box, click the button to Vaccinate USB drive(s).
* Exit Panda USB and AutoRun Vaccine when done.

Note: Computer AutoRun Vaccination will prevent any AutoRun file from running, regardless of whether the removable device is INFECTED or not. USB Vaccination disables the autorun file so it cannot be read, modified or replaced by malicious code. The Panda Resarch Blog advises that once USB DRIVES have been vaccinated, they cannot be reversed except with a format. If you do this, be sure to back up your data files first or they will be lost during the formatting process.

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Let's clear out the programs we've been using to clean up your computer, they are not suitable for general malware removal and could cause damage if launched accidentally. These steps will also help secure the work you have done.

* Click START then RUN
* Now type COMBOFIX /Uninstall in the runbox
* Make sure there's a space between Combofix and /Uninstall
* Then hit Enter.

The above procedure will:
* Delete: ComboFix and its associated files and folders.
* Reset the clock settings.
* Hide file extensions, if required.
* Hide System/Hidden files, if required.
* Set a new, clean Restore Point.

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Clean out your temporary internet files and temp files.

Download TFC by OldTimer to your desktop.

Double-click TFC.exe to run it.

Note: If you are running on Vista, right-click on the file and choose Run As Administrator

TFC will close all programs when run, so make sure you have saved all your work before you begin.

* Click the Start button to begin the cleaning process.
* Depending on how often you clean temp files, execution time should be anywhere from a few seconds to a minute or two.
* Please let TFC run uninterrupted until it is finished.

Once TFC is finished it should restart your computer. If it does not, please manually restart the computer yourself to ensure a complete cleaning.

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Use the Secunia Software Inspector to check for out of date software.

• Click Start Now
  
• Check the box next to Enable thorough system inspection.
  
• Click Start
  
• Allow the scan to finish and scroll down to see if any updates are needed.
• UPDATE anything listed.