From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.7) Gecko/20050417 Fedora/1.7.7-1.3.1

Description of problem:
Instead of my search results being displayed I get the following:

ERROR
The requested URL could not be retrieved

While trying to process the request:

GET /search/oasis.dll?Rent_Minimum=0&Rent_Maximum=9999&allsizes=1&threebdrm=1&am37=0&type_listing=1&cont.x=34&cont.y=17&mode=4096&current_criteria=%26area2%3DY%26subarea7%3DY%26allsizes%3D1%26allbaths%3D1%26state%3DIL%26rgn1%3D1%26prvpg%3D5%26type_listing%3D1%26srt1%3D0.35%26srt2%3D0.95%26srt3%3D0.72%26Rent_Minimum%3D0%26Rent_Maximum%3D9999&page=Results&area2=Y&subarea7=Y&state=IL&rgn1=1&prvpg=5 HTTP/1.1
Host: www.apartments.com
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.7) Gecko/20050417 Fedora/1.7.7-1.3.1
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Proxy-Connection: keep-alive
Referer: http://www.apartments.com/search/oasis.dll?subarea7=Y&cont.x=41&cont.y=10&page=Rent&area2=Y&Rent_Minimum=0&Rent_Maximum=9999&state=IL&rgn1=1&prvpg=4&type_listing=1
Cookie: IF_SessionCookie1=1115146736408; CP=null*; userId=172255032111350686724388; WSS_GW=V1z%%%Q%CrX%Q; CTG=1115146736; IFsess=37; accrueID=rent; srchid=2887332448111514182673768


The following error was encountered:

    * Invalid Response 

The HTTP Response message received from the contacted server could not be understood or was otherwise malformed. Please contact the site operator. Your cache administrator may be able to provide you with more details about the exact nature of the problem if needed.

Your cache administrator is root.
Generated Tue, 03 May 2005 18:59:03 GMT by server.gagme.com (squid/2.5.STABLE6) 

Version-Release number of selected component (if applicable):
squid-2.5.STABLE6-3.4E.5

How reproducible:
Always

Steps to Reproduce:
1. Open Mozilla and go to apartments.com
2. Choose Illinois
3. Choose 1 - Chicago & Vicinity
4. Choose 2 - Chicago - South
5. Choose 7 - South Loop
6. No need to change any defaults, just hit Continue

Actual Results:  RROR
The requested URL could not be retrieved

While trying to process the request:

GET /search/oasis.dll?Rent_Minimum=0&Rent_Maximum=9999&allsizes=1&threebdrm=1&am37=0&type_listing=1&cont.x=34&cont.y=17&mode=4096&current_criteria=%26area2%3DY%26subarea7%3DY%26allsizes%3D1%26allbaths%3D1%26state%3DIL%26rgn1%3D1%26prvpg%3D5%26type_listing%3D1%26srt1%3D0.35%26srt2%3D0.95%26srt3%3D0.72%26Rent_Minimum%3D0%26Rent_Maximum%3D9999&page=Results&area2=Y&subarea7=Y&state=IL&rgn1=1&prvpg=5 HTTP/1.1
Host: www.apartments.com
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.7) Gecko/20050417 Fedora/1.7.7-1.3.1
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Proxy-Connection: keep-alive
Referer: http://www.apartments.com/search/oasis.dll?subarea7=Y&cont.x=41&cont.y=10&page=Rent&area2=Y&Rent_Minimum=0&Rent_Maximum=9999&state=IL&rgn1=1&prvpg=4&type_listing=1
Cookie: IF_SessionCookie1=1115146736408; CP=null*; userId=172255032111350686724388; WSS_GW=V1z%%%Q%CrX%Q; CTG=1115146736; IFsess=37; accrueID=rent; srchid=2887332448111514182673768


The following error was encountered:

    * Invalid Response 

The HTTP Response message received from the contacted server could not be understood or was otherwise malformed. Please contact the site operator. Your cache administrator may be able to provide you with more details about the exact nature of the problem if needed.

Your cache administrator is root.
Generated Tue, 03 May 2005 18:59:03 GMT by server.gagme.com (squid/2.5.STABLE6) 

Expected Results:  I should be shown a list of my results.

Additional info:

This happens with both Mozilla on Linux as well as Internet Explorer on Windows XP whenever using the Squid proxy on RHEL4.

The search works perfectly when not using a proxy or using an older squid proxy such as squid-2.5.STABLE1-3.9 on a Red Hat 9 server I have here as well.