SourceForge.net - zip format?

Has SourceForge.net changed there zip archive file type. I have 3 different zip programs which contain every file type out there (or so I thought), but I can not unzip downloads from SourceForge. I thought I read somewhere a while back they were changing to a more compressed format. Anyone know what it is and where I can get it? One would assume I could find it on there home site.. if it's there, I'll change my tag to "the dim light bulb ".
Thanks

 

I d/l from them quite often and have seen no change. In fact, I just went there and tried a few before posting this, and XP's context menu zipfldr.dll opened them just fine.

I read the same thing as you did somewhere about a new .zip format that offered degrees of compression (like .cab files do now) and thought what a disaster it would be for zip to represent different formats, like the mess with doc and avi now.

 

Sorry for the missing previous reply from TonyT.
As far as my problem, it appears I was getting (empty).zip and (empty).tar.gz files. I shared the same concern / confusion as Abraxas... "new .zip format that offered degrees of compression." When I was getting "can not open" errors for zip file using winzip I was concern of this change. I later noticed D/L file size was one tenth stated at D/L site. When I held my cursor over the compressed files, displayed unknown archive type, with packed files all reporting 0 bytes. Still have the files if anyone is interested.