Vista - power option problem

say i make a new power custom plan and save it now i am useing it as my defult plan here is the probelm eveytime i use the modem the second i click connect the power plan automatically bounces to high performace. and when its done dialing the number sometimes it will auto switch back to the custom plan and sometimes not. what is causing this to happen its very annoying especially if im using the batter however it happend even when the plug is used or vise versa. what is makeing it auto bounce between plans like that. I re partitions the hard rrive and re-insdtalled windows and even did a master recovery from the factory cds and this still happend after 4 new fresh installs. I heard someone say this is a vista64bit bug but they was not to sure on it. or if ti was even true. is there a fix. patch etc
note i do have service pack 1 and 2 installed and all the window updates done this did not resolve the problem in the least bit.

Hello Microvista64, and welcome to Vista Forums.

As a workaround, you can use one of the default power plans and adjust it's settings to what you need and use it instead. Hopefully that will work better for you.

Shawn