In spite of all our testing, two critical regressions have been found in the TM 2.0.1 Terminal widget: Bug 205393 can cause a StackOverflowError (causing all of Eclipse to shut down), bug 205186 makes the terminal paint incorrectly on Mac OSX.
We're working on fixes with high urgency. For more info, see the Known Issues and Workarounds page on the Wiki. Enable "Watch" on it or the bugzilla's related to get informed about latest news.
For now, we need to recommend terminal users to NOT YET UPGRADE to 2.0.1 but stick with the 2.0 implementation.