Extremely Slow Internet Connection

These past few days the internet connectionn has been freakingly slow like a tortoise. I am using the wireless broadband connectivity and it has always been a bit slower than Streamyx - but that is ok as I could work with moderate speed. But these few days, it has been crawling ever so slowly that it is better I take a nap than to wait and wait for eons of hours. My job as home is like this - whenever there is a call from the boss, I have to work at any time of the day to send out quotations. So I am not at liberty to rest for a long time without a call from him to work with the computer and internet. And with the slow connection, it is like waiting for the next page to show up for at least 5 minutes!