Internet suddenly slow in SUSE

Mid way through the day today, I noticed that my internet is running terribly slow. I have a 2Mb DSL connection which is normally fast enough. If I boot into windows everything is snappy as can be. In linux, whether Konqueror or Firefox everything is 56k slow. The only changes that I can think of that I made to my systems was apt updating last night. The two machines running SUSE (both apt updated) are running really slow. My roommates' computers, 1 running Knoppix, the other running WinXP, are both running fine. Any thoughts? Steve