My 72 year old father has a Windows XP machine. He recently switched to HughesNet for his internet provider. He normally accesses the internet around 4:00 AM during HughesNet's free download period. He has begun receiving a Web Acceleration Client Error 509.2 and his access has greatly diminished. He still has practically 100% of his allotted download remaining. Is there anyone out there familiar with this error and can you give me some tips to fix it for him? Thanks