1. you are sure it's not a clone?
2. did a professional do the install?
3. what kind of media are you using?
I don't know of any system that needs to warm up, and 1.82 firmware should have no problems... if you don't know if it's a clone, or wonder about the install, there is a 1.9 firmware out, if you can't upgrade it's either because the chip is a clone, or the install is not good enough to have it flash, which means it's probably a questionable install anyway... don't know why a clone would be this bad either though
EEEEEEWWWWW... girls gots cooties