After portage synced to 20091128, I got warning when I run emerge cmd:
Calculating dependencies \ * Digest verification failed:
* Reason: Filesize does not match recorded size
* Got: 2835
* Expected: 2837 ... done!
This manifests fine for me. Try deleting your distfile for this and re-downloading?
I found the manifest was checked in portage 20091129.
Please close the bug. Thx.