having rom problems with rom feb28 from colonal

[anthonyy216]

ok so my phone was having a bit of trouble and so i thought i would hard reset it and clear everything off to start fresh...well i decided to run a custom rom. the rom i loaded was a rom from the FTP directory... it is under colonal/roms/feb28 the rom looks nice and has A LOT of useful programs but i only got one problem...my phone boots up perfectly fine and makes calls but it wont stay on for longer than about 1 minute (at the most) then it soft resets...i unlocked the phone then loaded the rom, and everything went fine with no errors...did i do somthing wrong? is there a way to fix it ? help me out here guys. i need my phone back up ASAP because its my buisness line