Here are the limits I found for SharePoint 2003:
Sharepoint Services Limits
Hard Coded Site Limits for WSS (SharePoint Services)
> 40,000 subfolders and documents - cannot delete (applies to a single folder. a single document library, a site or site collection)
> 2 GB of information - cannot delete
> 10,000 subfolders and documents - cannot rename
> 500 MB of information - cannot rename
Lists cannot handle a lot of documents ( alot being over 1000 or 2000 documents)
For portal, if you have more than 30,000 documents in a library, the list will not be crawled correctly and no items will be retruned in the search results.
Column Limits per List
- support a maximum of 64 test fields in the SQL database per list
- these are furthre limited as such:
- 8 calculated fields
- 16 lookup fields
- 16 date/time fields
- 16 yes/no fields
- 32 number and currency fields
- 32 multiline text fields