Siskin IM's logo changed with f5cb5206, and it looks nice :)
However, you forgot to update Siskin IM's DOAP file, which links to the old logo (404). The same goes for Beagle IM.
Siskin with updated logo was not released yet as a stable version, but only as a beta build. When it will be released as a stable version, logo will be updated in DOAP file as well.
Fixed in f62410d5
Siskin IM's logo changed with f5cb5206, and it looks nice :)
However, you forgot to update Siskin IM's DOAP file, which links to the old logo (404). The same goes for Beagle IM.