Strange program connections

Strange ethernet access problem; some programs connect, others don't.
Hey, everyone. I have a dual boot on my desktop, one half Ubuntu Linux and one half Windows 7 (for gaming compatibility). My Ubuntu Linux side has no problems with any and all of it's programs connecting to the internet using auto eth0. On the other hand, my Windows 7 side has a few programs that can connect and others that cannot.

Programs which can connect:
Firefox
osu!
Steam Games
Skype
TeamSpeak 3
Programs which cannot connect:
Google Chrome
Steam Browser
Yahoo Messenger
Dungeons and Dragons Online
Here are my computer specs.

Windows: Microsoft Windows 7 6.1.7600
Internet Explorer: 8.0.7600.16385
Memory (RAM): 4096 MB
CPU Info: AMD Phenom(tm) II X2 550 Processor
CPU Speed: 3107.7 MHz
Sound card: Speakers (High Definition Audio
Display Adapters: NVIDIA GeForce GTS 250 (Microsoft Corporation - WDDM v1.1) | NVIDIA GeForce GTS 250 (Microsoft Corporation - WDDM v1.1) | RDPDD Chained DD | RDP Encoder Mirror Driver | RDP Reflector Display Driver
Monitors: 1
Screen Resolution: 1680 X 1050 - 32 bit
Network: Network Present
Network Adapters: Realtek RTL8168D/8111D Family PCI-E Gigabit Ethernet NIC (NDIS 6.20)
CD / DVD Drives: E:SONY DVD RW DRU-V202A
COM Ports: COM1
LPT Ports: NOT Present
Mouse: 3 Button Wheel Mouse Present
Hard Disks: C: 431.8GB | D: 0.0MB
Hard Disks - Free: C: 103.5GB | D: 0.0MB
USB Controllers: 7 host controllers.
Firewire (1394): 1 host controllers.
PCMCIA (Laptops): Not Installed
Manufacturer: American Megatrends Inc.
Product Make: MS-7576
AC Power Status: OnLine
BIOS Info:
Time Zone: US Eastern Standard Time
Battery: No Battery (Desktop)
Motherboard: MICRO-STAR INTERNATIONAL CO.,LTD 790GX-G65 (MS-7576)

Thank you in advance for your assistance.

wolvenreign said:

Strange ethernet access problem; some programs connect, others don't.
Hey, everyone. I have a dual boot on my desktop, one half Ubuntu Linux and one half Windows 7 (for gaming compatibility). My Ubuntu Linux side has no problems with any and all of it's programs connecting to the internet using auto eth0. On the other hand, my Windows 7 side has a few programs that can connect and others that cannot.

Programs which can connect:
Firefox
osu!
Steam Games
Skype
TeamSpeak 3
Programs which cannot connect:
Google Chrome
Steam Browser
Yahoo Messenger
Dungeons and Dragons Online
Here are my computer specs.

Windows: Microsoft Windows 7 6.1.7600
Internet Explorer: 8.0.7600.16385
Memory (RAM): 4096 MB
CPU Info: AMD Phenom(tm) II X2 550 Processor
CPU Speed: 3107.7 MHz
Sound card: Speakers (High Definition Audio
Display Adapters: NVIDIA GeForce GTS 250 (Microsoft Corporation - WDDM v1.1) | NVIDIA GeForce GTS 250 (Microsoft Corporation - WDDM v1.1) | RDPDD Chained DD | RDP Encoder Mirror Driver | RDP Reflector Display Driver
Monitors: 1
Screen Resolution: 1680 X 1050 - 32 bit
Network: Network Present
Network Adapters: Realtek RTL8168D/8111D Family PCI-E Gigabit Ethernet NIC (NDIS 6.20)
CD / DVD Drives: E:SONY DVD RW DRU-V202A
COM Ports: COM1
LPT Ports: NOT Present
Mouse: 3 Button Wheel Mouse Present
Hard Disks: C: 431.8GB | D: 0.0MB
Hard Disks - Free: C: 103.5GB | D: 0.0MB
USB Controllers: 7 host controllers.
Firewire (1394): 1 host controllers.
PCMCIA (Laptops): Not Installed
Manufacturer: American Megatrends Inc.
Product Make: MS-7576
AC Power Status: OnLine
BIOS Info:
Time Zone: US Eastern Standard Time
Battery: No Battery (Desktop)
Motherboard: MICRO-STAR INTERNATIONAL CO.,LTD 790GX-G65 (MS-7576)

Thank you in advance for your assistance.

What windows firewall and anti virus??

Avast! Pro (lastest) for both firewall and antivirus.

It's strange since these programs suddenly stopped working, really. They all once worked fine, then all of a sudden, stopped.

Edit: Oh, and they all worked under that firewall as well.

I've done some troubleshooting with Windows 7's automatic troubleshooting tool, and it says, "The configured proxy server is not responding." I have no recollection of ever setting up a proxy. The problem started rather suddenly as well.

Ah, yes, I just finished those steps. Coincidentally, I did it before you suggested it.

There were a few trojans found. (Strange that Avast! Pro didn't pick them up. Is there something wrong with Avast! Pro, I wonder?) I removed them and restarted Windows 7, but the problem remains, unfortunately. Man, I miss Google Chrome on my Windows side.

Oh, I can't possibly afford to remove my Ubuntu partition. (For anyone who's interested, 10.04 is what I'm currently using since its LTS release, not 9.10.)

Far too much data is stored on my Linux side. Truth be told, I don't trust Windows as a storage medium, especially since EXT4 outdoes NTFS by a mile at the moment. Windows 7 is just a gaming platform for me.

I do also have a problem with the MBR only running the Vista/7 bootmanager, even though I've tried everything to put GRUB back on there. I installed 7 AFTER Ubuntu. But that's probably a story for another thread.