It has been reported at WebmasterWorld Forums that users suggest Yahoo! has exited its UK version of the Overture Keyword Suggestion tool. Of late, the Keyword Suggestion tool which would load here without complications has proven unaccessible time out most quickly.
As it was promised with the US version, a better version too could be on the way. However, closer reading of the previous Yahoo! announcement suggests subliminally a new keyword tool, rather than improving the Overture tool.