Problem in Sharepoint 2001 

The Environment:
          Windows 2000 Server SP 4. 
          SharePoint 2001 SP 2a. 
          Number of workspaces: 6 
          WSS size (~12 GB). 
 
Error Description:

The following error happens randomly (~every 2 days)

The index entering ?Indexing Incrementally? state after this error happens.
Event id: 3060
A crawl couldn?t be started because the start address Random URL of
the workspace is here  is being used by another crawl in progress.

This crawl will start as soon as all its start addresses are released
by other crawls in progress.

Thanks 

Mickey
mickey@g-s.co.il