Problem Uploading Files in iis 5

[yordangs]

hello to everyone, i have a big problem with a server, i have a asp solution installed in one server and runs fine but the same solution in other server breaks down, when i try to upload files. I can upload files not biger than 100 kbs when i upload a file biger than this size send me a white page like the error 400 page canot be found i dont now what is happen any one have a idea what could be happen ?

thanks anyway any help will be appreciated

 

[yordangs]

here are my iis log

128.100.156.79 my pc
128.100.80.34 server


2007-05-30 23:43:00 128.100.156.79 - 128.100.80.34 80 POST /sa/FileUploadDemo.aspx - 200 Mozilla/4.0+(compatible;+MSIE+6.0;+Windows+NT+5.0;+Avant+Browser;+Avant+Browser;+.NET+CLR+1.1.4322;+.NET+CLR+2.0.50727;+InfoPath.1)
2007-05-30 23:43:02 128.100.156.79 - 128.100.80.34 80 - - - 400 -