Okay here is my two cents............. First ditch the task killer. I know Verizon says its good and all that yada yada, but in my experience the task killers have created conflicts internally with other apps. Also because a task killer is basically running all the time its killing your battery life. The Droid is set up in a way that a task killer is really not necessary.
Second.... ditch the stock messaging app. Again in my experience the stock app has had a lot of issues. I personally use Handcent but I know that others have used Chomp and love that as well. I do not have any troubles with my text messages dissappearing even after an update. Search the market for replacement text messaging apps, read the comments on each before you take my word for it or anyone elses word. Once you read the comments then you can decide if that is the replacement app for you. Keep in mind that a lot of the comments are psoted by users who are unhappy so they may be a bit slanted.
Hope this helps.
Second.... ditch the stock messaging app. Again in my experience the stock app has had a lot of issues. I personally use Handcent but I know that others have used Chomp and love that as well. I do not have any troubles with my text messages dissappearing even after an update. Search the market for replacement text messaging apps, read the comments on each before you take my word for it or anyone elses word. Once you read the comments then you can decide if that is the replacement app for you. Keep in mind that a lot of the comments are psoted by users who are unhappy so they may be a bit slanted.
Hope this helps.