Do certain systems hate Linux?

[Shashank SVRSN]

Hi !

My friend always has some or the other problem when using Ubuntu. 
Earlier he used to complain 'slow Internet connectivity -- only in 
Ubuntu, not in Windows'. Now he changed to another ISP and new complaint 
is 'no Internet connectivity -- only in Ubuntu, not in Windows'.

He used 'Linux Mint Live CD' too but in vain. My laptop never had a 
problem with his ISP. His system is a Sony Vaio VPCEH25EN. Sony being 
such a big company... I can't understand the reason