上网不稳定以至于上不了网（有traceroute测试，请高手帮忙分析）

[xinen007]

不知道哪里出了问题，希望高手帮忙分析，给出解决方案

网络情况：
从团委那里的交换机处连接一台100Mbps交换机到楼长处，从楼长处接一10Mbps集线器到我宿舍，网线长22m
宿舍两台电脑，一直都可以上网，但是上网也存在问题的，下载速度是很快的，都是上M级别的，但是打开网页一直都不怎么快
今天上网不稳定，打开网页奇慢，后来干脆就挂了，qq，fetion也登录不上，ping网关也只是偶尔能ping通。。。
（补充：qq可以登陆上了，但是发个消息都超级慢，迅雷还可以继续下载，此情况在windows下和linux下都是一样的）

ip配置(静态地址)：
地址:192.168.28.23
掩码:255.255.255.0
网关:192.168.28.254
DNS：202.196.80.1，202.102.224.68

ifconfig诊断结果：
inet 地址:192.168.28.23 广播:192.168.28.255 掩码:255.255.255.0
inet6 地址: fe80::217:31ff:fe57:4997/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 跃点数:1
接收数据包:1979 错误:3 丢弃:0 过载:0 帧数:1
发送数据包:2520 错误:86 丢弃:0 过载:0 载波:0
碰撞:0 发送队列长度:1000
接收字节:999481 (976.0 KB) 发送字节:379739 (370.8 KB)
中断:18 基本地址:0x4000

xinen007@007-pc:~$ traceroute http://www.baidu.com
traceroute to http://www.baidu.com (211.94.144.100), 30 hops max, 40 byte packets
1 192.168.28.254 (192.168.28.254) 10.287 ms 10.324 ms 10.387 ms
2 10.0.103.1 (10.0.103.1) 11.376 ms 11.542 ms 11.607 ms
3 10.0.102.2 (10.0.102.2) 9.300 ms 10.619 ms 11.693 ms
4 * * *
5 * * *
6 * * *
7 * * *
8 202.112.38.33 (202.112.38.33) 1.356 ms * *
9 * * *
10 bjcd3.cernet.net (202.112.46.161) 34.146 ms 36.028 ms 43.120 ms
11 202.112.53.178 (202.112.53.178) 17.952 ms 18.017 ms 18.082 ms
12 * * *
13 * * 211.94.44.2 (211.94.44.2) 578.403 ms
14 * 211.94.68.110 (211.94.68.110) 579.736 ms 585.378 ms
15 211.94.68.126 (211.94.68.126) 583.228 ms * *
16 * * *
17 * * *
18 * * *
19 * * *
20 * * *
21 * * *
22 * * *
23 * * *
24 * * *
25 * * *
26 * * *
27 * * *
28 * * *
29 * * *
30 * * *
xinen007@007-pc:~$ traceroute http://www.google.com
traceroute to http://www.google.com (64.233.189.147), 30 hops max, 40 byte packets
1 192.168.28.254 (192.168.28.254) 119.397 ms 119.445 ms 119.510 ms
2 10.0.103.1 (10.0.103.1) 3.425 ms 13.511 ms 13.778 ms
3 10.0.102.2 (10.0.102.2) 2.072 ms 3.081 ms 4.274 ms
4 192.168.0.11 (192.168.0.11) 1.279 ms * 1.465 ms
5 202.196.80.2 (202.196.80.2) 10.649 ms 10.849 ms *
6 * * *
7 210.43.146.5 (210.43.146.5) 1.228 ms * *
8 * * 202.112.38.29 (202.112.38.29) 1.342 ms
9 * * *
10 * bjcd3.cernet.net (202.112.46.161) 40.490 ms *
11 * * *
12 * * *
13 72.14.196.1 (72.14.196.1) 71.220 ms 71.330 ms *
14 * * *
15 66.249.94.34 (66.249.94.34) 71.433 ms 71.873 ms 66.249.94.6 (66.249.94.6) 82.270 ms
16 * * *
17 * * 64.233.189.147 (64.233.189.147) 70.150 ms
xinen007@007-pc:~$ traceroute http://www.google.com
traceroute to http://www.google.com (64.233.189.147), 30 hops max, 40 byte packets
1 192.168.28.254 (192.168.28.254) 119.397 ms 119.445 ms 119.510 ms
2 10.0.103.1 (10.0.103.1) 3.425 ms 13.511 ms 13.778 ms
3 10.0.102.2 (10.0.102.2) 2.072 ms 3.081 ms 4.274 ms
4 192.168.0.11 (192.168.0.11) 1.279 ms * 1.465 ms
5 202.196.80.2 (202.196.80.2) 10.649 ms 10.849 ms *
6 * * *
7 210.43.146.5 (210.43.146.5) 1.228 ms * *
8 * * 202.112.38.29 (202.112.38.29) 1.342 ms
9 * * *
10 * bjcd3.cernet.net (202.112.46.161) 40.490 ms *
11 * * *
12 * * *
13 72.14.196.1 (72.14.196.1) 71.220 ms 71.330 ms *
14 * * *
15 66.249.94.34 (66.249.94.34) 71.433 ms 71.873 ms 66.249.94.6 (66.249.94.6) 82.270 ms
16 * * *
17 * * 64.233.189.147 (64.233.189.147) 70.150 ms
xinen007@007-pc:~$ traceroute http://www.yahoo.com
traceroute to http://www.yahoo.com (209.131.36.158), 30 hops max, 40 byte packets
1 192.168.28.254 (192.168.28.254) 44.363 ms 44.392 ms 44.455 ms
2 10.0.103.1 (10.0.103.1) 16.838 ms 17.090 ms 17.155 ms
3 10.0.102.2 (10.0.102.2) 2.125 ms 3.078 ms 4.258 ms
4 192.168.0.11 (192.168.0.11) 1.397 ms 1.494 ms 1.992 ms
5 202.196.80.2 (202.196.80.2) 3.482 ms 13.266 ms 13.554 ms
6 222.21.219.1 (222.21.219.1) 2.669 ms * *
7 * * 210.43.146.5 (210.43.146.5) 1.363 ms
8 202.112.38.33 (202.112.38.33) 2.838 ms 2.582 ms *
9 * * *
10 * * *
11 * * *
12 * * *
13 * 202.147.17.13 (202.147.17.13) 63.216 ms 63.277 ms
14 203.192.134.69 (203.192.134.69) 56.078 ms 56.191 ms 56.308 ms
15 po15-0-0.cr1.nrt1.asianetcom.net (202.147.0.65) 114.099 ms 114.135 ms 114.201 ms
16 202.147.0.34 (202.147.0.34) 241.437 ms 242.289 ms 242.356 ms
17 * * *
18 216.115.107.59 (216.115.107.59) 243.636 ms * *
19 * * *
20 * * *
21 007-pc.local (192.168.28.23) 1827.670 ms !H 1827.664 ms !H *