Android : Errors Installing SDK Update In Eclipse

I recently bumped into a problem installing the latest SDK update (r6) in eclipse on Windows (7), which I ultimately "solved" and thought I would share. During the update of the SDK, the update process was trying to rename a folder (C:...android-sdk-windowsplatformsandroid-1.6) but failed to do so claiming that the folder was locked by another process.The alert window that popped up advised that on Windows this is often due to Anti Virus software monitoring the file system (or some such message).After dutifully disabling my local AV I still got the error. This prevents you from continuing with the installation and for fear of ending up with a half finished install I thought I would track down the culprit.I used ProcessExplorer (http://technet.microsoft.com/en-us/ sysinternals/bb896653.aspx) to find the file handle (in Process Explorer go to Find->File Handle or DLL.and type in the folder name, e.g. android-1.6).ProcessExplorer found two file handles, both of which were eclipse itself! In my case, I had ProcessExplorer force-close the handle(s), which is generally not a good idea but in this case it worked and the install was able to complete.I had some confidence that closing the handle would be OK because it seemed eclipse had a grip on a JAR file within this path, which would make some sense.I think in future it would be best to run the update outside of eclipse (ie launch the AVD manager directly), and indeed this may be in the guides for installing updates but I didn't check before I started the process.Just thought someone else may benefit from this.