Hi,
I noticed that trinitydesktop.org and bugs.pearsoncomputing.net are
unreachable from time to time from my location in Austria.
What can I do to overcome this?

The traceroute is like this

traceroute -p 80 trinitydesktop.org
traceroute to trinitydesktop.org (192.119.205.246), 30 hops max, 60 byte
packets
 1  fw.s-und-s.home (192.168.40.1)  0.819 ms  0.818 ms  1.178 ms
 2  10.0.0.138 (10.0.0.138)  4.413 ms  4.435 ms  4.695 ms
 3  178-191-255-254.adsl.highway.telekom.at (178.191.255.254)  22.098 ms 
22.625 ms  23.649 ms
 4  195.3.68.109 (195.3.68.109)  25.852 ms  25.867 ms  27.675 ms
 5  lg1-1171.as8447.a1.net (195.3.64.2)  39.227 ms  40.015 ms  41.220 ms
 6  ae7.fra29.ip4.gtt.net (141.136.99.57)  87.182 ms  85.773 ms  86.042 ms
 7  et-3-1-0.was14.ip4.gtt.net (141.136.111.165)  128.943 ms  116.571 ms 
116.858 ms
 8  192.205.37.193 (192.205.37.193)  120.809 ms  119.968 ms  123.946 ms
 9  cr1.wswdc.ip.att.net (12.122.113.38)  144.088 ms  144.326 ms  144.628 ms
10  cr2.sl9mo.ip.att.net (12.122.18.29)  147.708 ms  148.836 ms  149.094 ms
11  12.122.152.201 (12.122.152.201)  218.153 ms  218.149 ms  218.714 ms
12  * * *
13  * * *
14  * * *
15  * * *
16  * * *

NetRange:       12.122.0.0 - 12.123.255.255 belongs to AT&T

Did AT&T outsourced to India :D

Thanks & regards