A few days ago Google launched the beta version Web Accelerator, a tool to speed up web browsing on broadband connections with catching and pre-fetching techniques.
But some users now report that the service caches more than desired. There are even reports of people who went to a forum and saw they were logged in as someone they don't know.
"Whenever your computer sends cookies with browsing or prefetching page requests for unencrypted sites, we temporarily cache these cookies in order to improve performance," the company wrote on its Web site.
There still seem to be some flaws in Google's Web Accelerator so be cautious with it. More details at ZDNet