Barebone data:

• virtualization: VMWare Workstation 6.5 (latest)
• Host: Windows Server 2008 x64
• Guest: Windows Server 2008 x86
• Host network adapter: wireless
• Guest network adapter 1: over Bridge VMNet (automatic)
• Guest network adapter 2: over Host only VMNet

Problem
When I surf the net within VM my internet connection just gets stalled (not dropped). It doesn't experience any timeout whatsoever, it just stops downloading/communicating. For instance: I start downloading a file with a browser (IE/FF/CR doesn't matter) and I have to pause/restart download when speed drops to 0. I could wait indefinitelly but connection won't pickup automatically.

What did I miss in my network configuration?

Update 1

I've tested this in various combinations. This works fine when host is connected via Ethernet. But when connected via Wifi, the connection on the guest works as previously described. It connects fine. It gets a valid IP from DHCP... Everything is cool as long as you don't start doing some intensive network traffic (ie. download a 2MB file) In this case it starts downloading and stops after a while. Speed just drops to 0B/s... Sometimes it picks up back, sometimes it doesn't. Connection still stays and works. I can ping around with no problem.