Coming back from hols, I decided to upgrade to Eclipse Helios, knowing that the morning wouldn’t be too hectic.
I had a minor glitch, though, with the following error:
The Eclipse executable launcher was unable to locate its companion shared library.
Not sure how I ended up in this situation (maybe unzipping with Cygwin was the cause?), but the fix was straightforward enough. Look for a dll in the plugins directory (I found it there: ./plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.0.v20100503/eclipse_1307.dll); in Windows Explorer, right-click the file, click on Properties, and in the Security tab, make sure Read & Execute permission is set (either for everyone, or for the user you’re logged on as). Click OK, and that does the trick.