just to chip in on dialogue issue, i've had a slightly different issue using stock and cssu in web browser. sometimes i get a page not responding dialog appear but clicking yes or no does nothing. sometimes i can get back to task manager with ctrl+bs, sometimes not. sometimes you can close app or end current task, sometimes not. you can also close the app but the dialogue box gets left behind, for a fate of eternal button clicking..

apologies for the "sometimes", just illustrates how completely random it is. there is another issue whereby a page can be left open in background for days with no problems, then after switching to it and away again results in a browserd process causing high battery drain/cpu usage. its not flash, happens if site has pictures or just plain .txt files.