I have many similar messages in my log, such as:
"Instantiated a PackageDB object 02B74B78 for hardwareId 1c000504 and flashSize 32768" and
"Found a memory cached PackageDB nnnnnn for hardwareId 1c000504..."
According to RIM Technical Support & BES 4.1 for Exchange Release Notes (SDR# 78299), these messages are logged incorrectly. They are meant for debugging policy issues, and should be logged at the Policy LogLevel 5 setting. However, because of a software bug, they are logged at lower levels (4, 3, maybe lower). There isn't a scheduled fix release / date yet.
The hardwareId reflects the type of device (according to RIM):
4000404 = 7750
1C000504 = 7250
4000904 = 7130e
104 = 6750
404 = 6750 w/GPS function