同じく神奈川だけど全く問題ないな。
遅いって具体的にどのくらい？

=== Radish Network Speed Testing Ver.3.2.1 - Test Report ===
測定条件
　精度:高 データタイプ:標準
下り回線
　速度:93.92Mbps (11.74MByte/sec) 測定品質:99.1
上り回線
　速度:94.09Mbps (11.76MByte/sec) 測定品質:99.4
測定者ホスト:*******.tokyo.ip-link.ne.jp
測定サーバー:東京-WebARENA
測定時刻:2007/11/3(Sat) 0:50
------------------------------------------------------------
測定サイト http://netspeed.studio-radish.com/
============================================================

Pinging jpix.co.jp [210.171.225.81] with 32 bytes of data:

Reply from 210.171.225.81: bytes=32 time=2ms TTL=55
Reply from 210.171.225.81: bytes=32 time=2ms TTL=55
Reply from 210.171.225.81: bytes=32 time=2ms TTL=55
Reply from 210.171.225.81: bytes=32 time=3ms TTL=55

Ping statistics for 210.171.225.81:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 2ms, Maximum = 3ms, Average = 2ms