crash because of xul2 API changes

Binary package hint: couchdb

couchdb doesn't work in natty.
Some investigations showed that it's related to xulrunner 2.

While using Quickly, a freshly created project doesn't even run. It's stuck in preferences.load() and the cpu sky rockets forever in beam.smp.

~/.cache/desktop-couch/desktop-couchdb.stdout.1 is growing fast with lines such as those:
[error] [<0.148.0>] OS Process Error <0.13019.1> :: {os_process_error,{exit_status,127}}
[error] [<0.148.0>] OS Process Error <0.13023.1> :: {os_process_error,{exit_status,127}}
[error] [<0.148.0>] OS Process Error <0.13026.1> :: {os_process_error,{exit_status,127}}

~/.cache/desktop-couch/desktop-couchdb.stderr.1 too:
/usr/lib/couchdb/bin/couchjs: symbol lookup error: /usr/lib/couchdb/bin/couchjs: undefined symbol: JS_GetStringChars
/usr/lib/couchdb/bin/couchjs: symbol lookup error: /usr/lib/couchdb/bin/couchjs: undefined symbol: JS_GetStringChars
/usr/lib/couchdb/bin/couchjs: symbol lookup error: /usr/lib/couchdb/bin/couchjs: undefined symbol: JS_GetStringChars

$ ldd /usr/lib/couchdb/bin/couchjs | grep js
        libmozjs.so => not found
$ ls -l /usr/lib/xul*/libmozjs.so
-rw-r--r-- 1 root root 1359840 2010-12-13 06:44 /usr/lib/xulrunner-1.9.2.13/libmozjs.so
-rw-r--r-- 1 root root 3221348 2011-01-13 03:36 /usr/lib/xulrunner-2.0b9/libmozjs.so
$ export LD_LIBRARY_PATH=/usr/lib/xulrunner-2.0b9
$ ldd /usr/lib/couchdb/bin/couchjs | grep js
        libmozjs.so => /usr/lib/xulrunner-2.0b9/libmozjs.so (0x007bb000)
$ objdump -T /usr/lib/couchdb/bin/couchjs | grep JS_GetStringChars
00000000 DF *UND* 00000000 JS_GetStringChars

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: couchdb (not installed)
ProcVersionSignature: Ubuntu 2.6.37-12.26-generic 2.6.37
Uname: Linux 2.6.37-12-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Sat Jan 15 19:45:08 2011
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha i386 (20100331)
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 LC_MESSAGES=en_US.utf8
 SHELL=/usr/bin/tcsh
SourcePackage: couchdb