The snapshot of the Scala plugin for Eclipse that I posted a few days ago had a couple of annoying bugs. Here’s a new one build (note that it’s an Eclipse update site, so no point in trying to access it with a browser) from revision 17139 of the trunk of the plugin with the compiler and standard libraries from the 2.7.x branch.
Update: New build published that includes fix for ticket 1741. Uninstallation followed by installation may be required if p2 starts giving cryptic errors (it seems like it doesn’t handle well the case where the update site is replaced). Sorry about that.
Update 2: With the release of Scala 2.7.4-rc1, this backport is obsolete.