Yes i have a very similar system(same m,board, 1ghz cpu,64meg gforce win M.E)
I have been getting very odd crashes and lock outs,i have been to aopens web page and they seem to be saying that there is a prob with pc133 memory(have a look...is it just me?)for example with my cpu they reccomend pc100 memory i have no idea if this is causing your prob but it may be worth looking at.
best of luck,
Theobob ( try a scooby snack!!!)