SupaMonkey

Hey Guys,
I have a strange speed problem happening where communication with a server is extremely slow for some reason.

The server is:
Intel 2U Alcolu-R Xeon DC Platform
2x Intel® Xeon® DP 5420 Processor - 2.50GHz Quad Core, Socket 771, 12MB, 1333MHz FSB, 45nm, Passive
Seagate® Barracuda™ 7200.11 Series - 500GB Serial ATA II (SATA2) Plus - Serial ATA 300 (3Gbps) w/32MB Cache
2x Transcend® 2GB Registered ECC DDR2-667 240-Pin Fully Buffered DIMM (FB-DIMM) Memory @ CL 5-5-5-15 - 6 Layer -
Microsoft® Windows Server 2008

About 10 clients are connected to it, all running Windows Vista Ultimate. PCs are all decent machines with 2-4GB of RAM with recent CPU's, etc.

Network consists of a Netgear GS716T Gigabit switch and so the entire network (except for 2 clients) is running at Gigabit speeds.


Now, the clients are all setup on active directory with a domain setup on the server and they can all login fine, etc. All their files are stored on the server through a Group Policy.
Problem comes in when they have to communicate with the server.

Examples:
- Open an excel file and/or saving it can take several minutes
- Some custom applications that use MySQL on the server can take several minutes to boot


No software changes have been made or new software installed.

Network config is all static IP's and internet access is achieved through a router on the internet. All client primary dns is set to the server.

Server Network settings:
Computer Name: server
IP: 192.168.0.100
Subnet: 255.255.255.0
Gateway: 192.168.0.1
Primary DNS: 192.168.0.1

Client Network Settings
IP Range: 192.168.0.20->40
Subnet: 255.255.255.0
Gateway: 192.168.0.1
Primary DNS: 192.168.0.100

Domain on the server is: companyname.pvt
From the client PC's I can resolve companyname.pvt as well as server to 192.168.0.100 and ping it fine.

So once again, I can login from all the clients and access all info - but why the hell is it so slow on such a nice setup as this is?

Thanks in advance!