eclipse - Android SDK installation issue - Peer not authenticated -

i trying install android sdk , following error in sdk manager logs -

fetching https://dl-ssl.google.com/android/repository/addons_list-1.xml failed fetch url https://dl-ssl.google.com/android/repository/addons_list-1.xml, reason: peer not authenticated fetched add-ons list fetching url: https://dl-ssl.google.com/android/repository/repository-5.xml failed fetch url https://dl-ssl.google.com/android/repository/repository-5.xml, reason: peer not authenticated done loading packages. 

the error has proxy settings etc. running ubuntu 11.10 , had installed sdk comfortably on same setup yesterday.

as workaround, enabled "force https://... sources fetched using http://..." setting in sdk manager tools > options menu.

if use android studio instead of standalone sdk manager, choose "sdk update sites" in "android sdk" settings , click checkbox in lower part of screen.

that seems help. suspect server side problem, i'm not sure that.

edit: please note using http instead of https not best idea! in worst case, man-in-the-middle attack inject malicious code android sdk libraries ends in apk. that's why it's called workaround :)