The the latest build of IDEA I know longer get the individual file items
enabled in the right-mouse popup menus. Only the global items (like Mark
Project As Current, Check in Project, and Merge Project) are enabled. I
can still check out a file by attempting to edit a read-only one, which
pops up the "Do you want to check out?" dialog, which seems to work fine.
It's as if the ClearCase plugin doesn't seem the current file selection