Any specific error message

Try to run the job from New query window using sp_start_job and track it .

R u scheduling and running the mentioned job or manually its executed .If manually...

If cost is not a contraint try using backup Software Like litespeed or legato which proves fruitful

Check out this link , u can come to conclusion - http://msdn.microsoft.com/en-us/library/bb510414.aspx

run sp_spaceused and return the results.

Also sp_helpdb - requested this to check maxsize,initial size and filegrowth if its in % change it to some 50 or 100 MB

In SQL server 2005 use sp_sendmail procedure

@copy_receipents = '' to add mails id in CC lsit

this example is for SQL server 2005

Post adding /3GB in boot.ini server needs to be rebooted

Then u have to decide how much u r planning to provide for SQL server

For example : Total physical...

Not needed

Just to add few more point , Export and Import wizard will copy only data apart from SPs, Functions . index , .triggers all needs to be scripted and created...

First reason if there is no disk space - so careful palnning of backup strategy will help , Full , differential and transaction log backups and then moving it to...

First plz clarify whether the server is moved to different domain and secondly check whether the maintenance plan still exists

Some possible problems.

1.Tape backup my be blocking the file from deletion .

2.Also check SQL server startup account has modify permission for respective folders and file level too

3....

Try this http://social.msdn.microsoft.com/Forums/en-US/sqldatabaseengine/thread/ffc3467d-e61b-4d8e-afc1-d39251090605/

Its advisable to set Auto file growth is in MB rather than in % for better performance , so if u keep as 100MB which is 10% of the 1GB...