I decided to take a chance and upgrade my HDD, despite the obvious problems many people are having. I purchased a WD 320GB 7200rpm Scorpio Black and 4GB of Crucial RAM. I did the EFI 1.7 update when it was pushed, as most did. Had no problems after the update. Got the PU when pushed, as well. I decided to upgrade, wanting more space and a faster drive. Instead of a fresh install, I decided to try a drive cloning using CCC. I first used a external enclosure to format the new drive, then did a clone of my old drive via USB. This has worked like a charm. This thing is blazing fast, now. Still running EFI 1.7. Just thought someone may want to try this.
Model Name: MacBook Pro
Model Identifier: MacBookPro5,5
Processor Name: Intel Core 2 Duo
Processor Speed: 2.26 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 3 MB
Memory: 4 GB
Bus Speed: 1.07 GHz
Boot ROM Version: MBP55.00AC.B03
SMC Version (system): 1.47f2
Serial Number (system):
Hardware UUID: A684C2F3-DABB-5AF6-B584-64C10C9A78C1
Sudden Motion Sensor:
State: Enabled
Product: MCP79 AHCI
Speed: 3 Gigabit
Description: AHCI Version 1.20 Supported
WDC WD3200BEKT-00F3T0:
Capacity: 320.07 GB (320,072,933,376 bytes)
Model: WDC WD3200BEKT-00F3T0
Revision: 11.01A11
Serial Number:
Native Command Queuing: Yes
Queue Depth: 32
Removable Media: No
Detachable Drive: No
BSD Name: disk0
Rotational Rate: 7200
Partition Map Type: GPT (GUID Partition Table)
S.M.A.R.T. status: Verified
Volumes:
Macintosh HD:
Capacity: 319.73 GB (319,728,959,488 bytes)
Available: 257.35 GB (257,347,403,776 bytes)
Writable: Yes
File System: Journaled HFS+
BSD Name: disk0s2
Mount Point: /