I noticed that mine did. It was impossible to ignore. My tablet would frequently become unresponsive when I went to sites that had Flash content. Or sites with Flash content would be unusable because they relied on mouseovers in a way that doesn't work with touchscreen devices.

After a week I got around to figuring out how to disable Flash on the device. At which point my desire to give up on the Android tablet and get an iPad after all diminished considerably.