UPDATE: It looks like my 13.0.1 is calling code from this diffed CharMatcher.
http://code.google.com/p/guava-libraries/source/diff?spec=svn69ad96b719d7cd3d872a948d7454f1
As a quick help, try to switch to the newest version from the source repo. There are changes there, e.g. the method slowGetChars
is gone. It used to be a bit slow, but nowhere near what's happening to you.
For everybody else it runs some hundred times faster and without being able to reproduce it it's hard to help.