Android device freezing all the time!!!!

[DMSANN111]

Have been having issues with MyTouch 4G freezing. According to community area, minimum amount of available internal device space for Android device is 25 MB. This amount was first determined by Android to be for the G1 which only had 126 MB of internal device available space. My question is, with Android phones having more available space ie: MyTouch 4g 4GB ROM and 512 MB RAM, should the available internal phone storage be higher than 25MB in order to run properly? It would seem to me that if the phone had more available internal phone storage, the available space needs to be proportionally greater to run properly. Someone please help me with this question that has been bothering me for months.

Thanks for a quick response if possible