I am having severe problems of getting up to date content out of www.smeed.org when connected thorugh my daytime ISP Freeserve. Freeserve are using a transparent cache. The culprit is Network Appliance - Products - NetCache. Here's the evidence from a traffic transcript:

>000091BA> HTTP/1.1 200 OK  
>000091CB> Age: 605  
>000091D5> Date: Thu, 22 Feb 2001 11:17:31 GMT  
>000091FA> Content-Length: 19449  
>00009211> Content-Type: text/html  
>0000922A> X-Pad: work around browser bug  
>0000924A> Server: UserLand Frontier/7.0b25-WinNT  
>00009272> Via: 1.1 webcacheMP2 (NetCache NetApp/5.0.1R1DEBUG2), 
>000092A8> 1.1 webcacheM07 (NetCache NetApp/5.0.1R1DEBUG2)  

Using Freeserve I cannot reliably update and edit the pages on this site. It seems that NetCache is insisting on serving stale pages. I didn't use to have this problem so perhaps Freeserve have changed their configuration. Hopefully, it's just a case of adding a suitable header server-side.