I've noticed that Safari's performance degrades noticeably over time. For instance, it's lightening fast immediately after a cold boot. Rendering is quick, and chequerboarding while scrolling through a webpage is minimal. However, after a few hours of use, rendering is definitely slower and chequerboarding is present to a far greater degree. If I force quit safari and start it again, it's back to normal, but eventually starts to slow down over time again. This issue is definitely independent to that of having multiple tabs open. I've deliberately kept only one tab open while experimenting with this just to confirm that fact. I know that Safari's tendency to reload pages while switching between tabs is universally experienced (and lamented), but I haven't seen any complaints about the issue I've raised. Has anyone else experienced this? I just want to know if this is a common problem, or if my iPad is suffering from unique difficulties.