If it's working then yeah.
Slowness on wireless could be down to a few things really; the wirless adaptor you're using on the laptop, how far you are from the wireless router, and even the secruity you are using for wireless (WEP slows mine down considerabely, compared to using WPA).
Also it depends on what you're letting manage the wireless connection, Windows or the wirless adaptor software. One could manage better than the other, it's just trial and error to find out.