I can deliver email fine, but an unable to receive any emails, i check the Panc log and have:

2006-04-06 08:43:52 1FRQ5n-0001IX-RN failed to read delivery status for /usr/local/mail/bXXtc.co.uk/Paul/Maildiraul@buotc.co.uk from delivery subprocess
2006-04-06 08:43:52 1FRQ5n-0001IX-RN appendfile transport process returned non-zero status 0x0100: exit code 1
2006-04-06 08:43:52 1FRQ5o-0001Ie-Ks unable to set gid=90 or uid=90 (euid=8): local delivery to /usr/local/mail/bXXtc.co.uk/Paul/Maildir </usr/local/mail/bXXtc.co.uk/Paul/Maildir> transport=virtual_delivery
2006-04-06 08:43:52 1FRQ5o-0001Ie-Ks failed to read delivery status for /usr/local/mail/bXXtc.co.uk/Paul/Maildiraul@bXXtc.co.uk from delivery subprocess
2006-04-06 08:43:52 1FRQ5o-0001Ie-Ks appendfile transport process returned non-zero status 0x0100: exit code 1
[root@lookout spool]#

I'm pretty new to exim and stuff so any help appreciated!!