So, my desktop computer (which has connectivity issues on and off; it's been about a year since my last bout), started being real slow on the internet. I'm getting ~30k/s average, with spikes of around 100k and 0.3k. I was messing around with Ubuntu a bit (still earning; great OS, but steep learning curve), and tried out the shutdown command. As expected, the computer shut down. I quickly started the computer again (< 5 sec after power down). When the system came back online, it was very reluctant to connect to my router, and painfully slow network speeds (slower than it is now). I have rebooted, shut down for 5 min, and tried the wireless in windows 7; same result every time. Interestingly, the wireless was far slower in windows than in Ubuntu (figured I screwed linux up somehow as I'm very prone to do). The connectivity problem went away after the computer initially connected to the router, quickly connecting to it after every reboot (except for after having rebooted the router itself; that took a bit longer than usual to reconnect).
I know it's on the desktop-side of the connection, because my Macbook has lost no performance whatsoever (~1.5m down, 300k up).
My pings are still solid, but the bandwidth somehow is severely constrained.
Quick hardware rundown:
Router : D-Link DIR-628
Desktop: MSI P-965 Platinum
D-Link DWA-552 (PCI)
Windows 7
Ubuntu 10.04
Thanks in advance, guys.