General SMS Popup alternative???

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http://androidforums.com – I've been using SMS popup for ages but have just recently ran into an issue with the app. After viewing the popup, the lockscreen will no longer engage until restarting the phone, which doesn't work for this guy. I'm currently on MTDEV CM7, and was wondering if there was a workaround for this, or if there's an alternative app that accomplishes the same thing, preferably without replacing the native messaging app. Any help would be greatly appreciated! (General)