Any idea why my Mogul has massive slowdown when opening apps?

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No I am not using email, the main thing I notice it on is text messages, but usually it loads fairly fast, just in the last couple days it just bogs way down and its like the same kind of slow when a PC is bogged down with too much going on and stuff just takes way longer to load because it is processing too much, but there are no other programs running on my phone. I have checked the task manager and I have run the Oxios close apps program as well.

I just don't get what could have happened to make it do this all of a sudden, like I said I have not installed anything, the only things I have done is taken out my SD card and put it back in while the phone was off. I also changed out some programs on my quick launch deal. It has been like a month or more since I think I have even synced my phone with the computer.