funny... I've been using the eclipse debugger with CF since it came
out, and today when I upgraded to 3.4.1 I hit the same problem you
did.
Here's what to do:
when it flips into debug mode, you need to get the "Variables",
"Breakpoints", and "Debug output Buffer" Views open. To do that:
1) Window -- Show view
2) open up the "ColdFusion" folder. Click on Debug Output Buffer
3) open up the "Debug" folder. CTRL-Click on the Breakpoints and
Variables entries
4) Click OK.
These views, now that they're open, will become part of the Debug
perspective, at whatever position you drag them to. Consequently,
they'll retain their position when you switch back into the debug
perspective for subsequent debug sessions.
HTH.
Marc