no problems here, but what i can suggest is to clear your temp files, flash cache, etc ...
maybe calling out a tech from your ISP can help

PS: i also recently had a problem with my internet i wasnt aware off and a tech came out to fix problems to my PVR and TV, however he pointed out that the modem plugged into the power bar (i have TV/internet/phone on the same provider) could lead to problems... the reason i am telling this is not because i am trying to bore you to death but because after he unplugged the modem and plugged it into another outlet without a powerbar i literally experienced a difference of day and night