AdamK: i wasnt talking about the speed guide nor the speed test, i meant transfer speeds. i went few times today changing between 1.8.3 and 2b without changing any settings and as a result i got straight lines (both u/l and d/l) in 1.8.3 and zig-zag looking graph in 2b. also tried disabling "Enable bandwidth management" to see if the low transfers speeds were uTP related but this seems not to be the case, the same speed drops and rises were happening again edit: added some screenshots http://img15.imageshack.us/img15/218/183r.jpg http://img21.imageshack.us/img21/1214/39311141.jpg