Aim 6.5.9.1 Fixes Umm..

Aim 6.5.9.1 was silently released in response to security vulnerabilities. This does not fix the Aim 6.5 and Windows Vista bug that occurs. Aim 6.8 does not fix this issue either, and has been left unresolved.  You can read more about the server execution failed bug in this recent post

Aim 6.5.9.1 and Windows Vista Users

1. Before installing Aim 6.5.9.1 from Aim.com please turn on Vista’s UAC controls. Instructions are contained in this recent post.

Also skins will be updated at the end of Janurary 08 to work with Aim 6.5.9.1.