I don't know if this is a bug or what, but I have a Vaio FW (Intel Core 2 Duo / ATI Mobility Radeon HD 4650) series with Kubuntu, I installed Wings 1.4.1 from the repository, and then downloaded another from SourceForge.
Wings runs perfectly at the start. When I begin modeling or load a model it begins to have input issues: I have to click twice every time; then, after a while it becomes uncontrollable and the whole OS mouse input becomes "corrupted". If/when I manage to close Wings it takes a while for the input methods to normalize. Odd...
It works perfect under Windows 7.