missing ram?

I've just bought some ram (upgraded from 512 to 1g) but the print out below says: Total Physical Memory 1,024.00 MB

Available Physical Memory 511.14 MB

Does this mean that one of the memory modules is not being recognised? and that I'd have been better to stay at 512?



Thanks



altvic



OS Name Microsoft Windows XP Professional

Version 5.1.2600 Service Pack 2 Build 2600

OS Manufacturer Microsoft Corporation

System Name OFFICE

System Manufacturer NVIDIA

System Model AWRDACPI

System Type X86-based PC

Processor x86 Family 6 Model 8 Stepping 1 AuthenticAMD ~2079 Mhz

BIOS Version/Date Phoenix Technologies, LTD 6.00 PG, 02/05/2003

SMBIOS Version 2.2

Windows Directory C:\WINDOWS

System Directory C:\WINDOWS\system32

Boot Device \Device\HarddiskVolume1

Locale United Kingdom

Hardware Abstraction Layer Version = "5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)"

User Name OFFICE\Administrator

Time Zone GMT Standard Time

Total Physical Memory 1,024.00 MB

Available Physical Memory 511.14 MB

Total Virtual Memory 2.00 GB

Available Virtual Memory 1.96 GB

Page File Space 2.34 GB

Page File C:\pagefile.sys

It means you have a little more than half the ram in use... Any programs open?

zonealarm is the main one