Product review (5 stars): This filter is great, and has worked flawlessly for months
At first, I used tape to hold it in place, thinking the filter was to blame.  Then I took a flashlight and looked into the space where the filter goes.  The old ripped filter that this replaced had allowed a massive build up of lint, which was pushing the new filter out of place.  Using a screwdriver, I removed the lint.  This filter is great, and has worked flawlessly for months.