Whenever I click on any imported .. anything in Juno, Eclipse immediately hangs.
Editing Java files - types, classes, annotations, import itself - mousing eclipse instantly hangs over anything to view javadoc.
It also happens with automatic completion if the popup remains open for more than a second.
Here's the error:

Duration:
java version "1.7.0_15"
Java(TM) SE Runtime Environment (build 1.7.0_15-b03)
Java HotSpot(TM) 64-Bit Server VM (build 23.7-b01, mixed mode)
Latest version of Eclipse Juno (Java EE) 64bit
Win7 x64.
There should not be any incompatibilities (all x64).
Looking back at the proposed fixes, they are either related to Java 6, or they say to delete Mylynwhat I did, but did not fix it.
This error occurs sequentially each time.
:
, .metadata .
, - , . , , , - .