Motorola KRZR K1m

I just purchased the KRZR for Sprint PCS and the only problem I seem to have is that there is a lag delay of almost 4 seconds when looking thru the menu on the phone or when looking at the pictures in the phone...I called Sprint and told me that I should that the phone to Sprint so they could check it on their computer and perhaps upgrade/flash the phone with an updated software. Has anyone having this same problem or is this solution from Sprint true?? Any help would be greatly appreciate it. Thanks..
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