hmmm,
your post confusing me a little bit.
Let me guess, since you dont provide enough information.
1) You are using Hentges rom, not the ofiicial image. There is one T5 hentges rom but no T5 3.3.6-pre1 from official openzaurus site
2) You dont have an ipkg problem, you have an network problem.
Well in this case I still dont have enough information:
How is you zaurus usually connected to internet? WLAN, USB?
Cheers,
Sam