PB wakes up to grey screen

Question

Recently my MacBookPro3,1 has started waking up occasionally to grey screen. Very had to get it to respond even using the power button. I have the latest system software on an 800GB partition on my western digital 1TB internal drive and 4GB ram. Always plugged into 120 V as power.
I found the following in the diagnostic messages log (found in system profiler /software /logs)
Location: /var/log/DiagnosticMessages
Recent Contents: Message: [most time: (3.967083) _association] trace: <CFArray 0x101004ee0 [0x1005e9f20]>{type = mutable-small, count = 6, values = (
0 : <CFString 0x10003acb0 [0x1005e9f20]>{contents = "prefnetwkAJ"}
1 : <CFString 0x10003ab70 [0x1005e9f20]>{contents = "scan non-DFS channels"}
2 : <CFString 0x101301fe0 [0x1005e9f20]>{contents = "(1.728383) _scan"}
3 : <CFString 0x1013043a0 [0x1005e9f20]>{contents = "(0.000009) _lookup"}
4 : <CFString 0x101314260 [0x1005e9f20]>{contents = "(0.020538) _keychain"}
5 : <CFString 0x10133c970 [0x1005e9f20]>{contents = "(3.967083) _association"}
PID: 5660
Any idea of a preventive measure to insure proper awakening?

Answer 1

OHMoore wrote:
PB G4 froze a couple of days ago when daughter was using MS Office. Switched off laptop and now when I try to reboot I get the beep, .......
Do you mean you get a normal startup chord, or an actual beep when starting? A beep would be an error tone indicating no RAM detected. This could be from having one RAM DIMM in a slot that has gone bad, for example.