java

I have a problem when I want to emerge vnc :

emerge vnc
Calculating dependencies ...done!
>>> emerge dev-java/blackdown-jre-1.3.1-r7 to /
>>> Resuming download...

>>> Downloading 
http://www.ibiblio.org/gentoo/distfiles/j2re-1.3.1-FCS-linux-i386.tar.bz2
--12:51:13--  
http://www.ibiblio.org/gentoo/distfiles/j2re-1.3.1-FCS-linux-i386.tar.bz2
           => `/usr/portage/distfiles/j2re-1.3.1-FCS-linux-i386.tar.bz2'
Resolving www.ibiblio.org... done.
Connecting to www.ibiblio.org[152.2.210.81]:80... connected.
HTTP request sent, awaiting response... 302 Found
Location: 
http://www.ibiblio.org/pub/Linux/distributions/gentoo/distfiles/j2re-1.3.1-FCS-linux-i386.tar.bz2 
[following]
--12:51:14--  
http://www.ibiblio.org/pub/Linux/distributions/gentoo/distfiles/j2re-1.3.1-FCS-linux-i386.tar.bz2
           => `/usr/portage/distfiles/j2re-1.3.1-FCS-linux-i386.tar.bz2'
Connecting to www.ibiblio.org[152.2.210.81]:80... connected.
HTTP request sent, awaiting response... 206 Partial Content
Length: 13,246,191 (10,200,763 to go) [application/x-tar]

100%[==================================================================================================>] 
13,246,191    46.88K/s    ETA 00:00

12:54:47 (46.88 KB/s) - 
`/usr/portage/distfiles/j2re-1.3.1-FCS-linux-i386.tar.bz2' saved 
[13246191/13246191]

>>> md5 ;-) j2re-1.3.1-FCS-linux-i386.tar.bz2
!!! No message digest found for j2re-1.3.1-02b-FCS-linux-ppc.bin.
!!! Type "ebuild foo.ebuild digest" to generate a digest.
!!! emerge aborting on  
/usr/portage/dev-java/blackdown-jre/blackdown-jre-1.3.1-r7.ebuild .

has someboy  a solution to solve that ??

thank you
tibo