Vista 64bit very slow WLAN connection

[sukram]

Hi,

Hopefully someone could help me and possible people with same problem to solve this problem.
I have Vista 64bit with WL-138g v2 WLAN card and Buffalo Airstation Wbmr-G125.
The internet connection has been good until this September. I don't know is it because of some Windows updates or what. At first I had also problem to get connection work but buying current wlan card and router helped the problem. (Vista still seems to have serious connection problems according the hit count of similar problems in forums)

Now the symptoms are following.
1. I Start the computer and log in to my account.
2. Earlier internet connection was rapidly created full connection tray icon was shown. Now it takes at least couple of minutes to get connected to internet. To establish connection between router and Internet takes 1-2 minutes.
3. Connection speed is slow. ~200-800kbps. For short periods it might be 2-8Mbps but it will slow down back to slow speed.

If I create connection using my Nokia phones data package I get faster connection.
Here's some ping results to this page (sorry finnish OS):
C:\Windows\system32>ping forums.techarena.in

Ping-isäntä: forums.techarena.in [207.58.148.78] 32 tavua tietoja:
Vastaus isännältä 207.58.148.78: tavuja=32 aika=134 ms TTL=56
Vastaus isännältä 207.58.148.78: tavuja=32 aika=132 ms TTL=56
Vastaus isännältä 207.58.148.78: tavuja=32 aika=136 ms TTL=56
Vastaus isännältä 207.58.148.78: tavuja=32 aika=132 ms TTL=56

Ping-tilastot 207.58.148.78:
Paketit: Lähetetty = 4, Vastaanotettu = 4, Kadonnut = 0
(0% hävikki),
Arvioitu kiertoaika millisekunteina:
Smallest = 132 ms, Largest = 136 ms, Average = 133 ms