I think I figured out what was causing lag when exiting text messages... w/ the new test/beta I was still getting the lag but it didnt happen till I ran pimbackup and restored my contacts and messages... well the 600 or so messages seem to have been the culprit lol I went threw and erased all sent/deleted/unneeded messages leaving me with about 20 or so messages and now the lag exiting text is gone.. not sure if it will help every one or not but it fixed it for me