This is my very first submission so don't be too rude on me ;P
I'm a real fan of Pink Floyd so I wanted to learn a solo and this one was the one I found:
http://www.ultimate-guitar.com/tabs/p/pink_floyd/fat_old_sun_solo_tab.htm.
It's very well done, but to my ears, it didn't sound right (sorry ;P) so here is the version
I think that may be a bit better (I corrected some errors and added some notes. Plus, I also
implemented bars (|) to put emphasis on the pauses because it's very important to 
get it right). ;)
I recommend you to listen to the song so you can know how long are the pauses because
it's varying on a kind of huge scale:

    (3:19)
e-|----|---------|--------|---------------------|------------|
B-|----|---------|--------|---------------------|------------|
G-|----|---------|--------|---------------------|------------|
D-|----|---------|--------|---------7--7--7h9---|------------|
A-|----|-------5-|-5h7--5-|-7--7/9------------8-|-10--10/12--|
E-|--3-|-5--7----|--------|---------------------|------------|

e-|-----------------------|----------------------------------|
B-|-----------------------|----------------------------------|
G-|--10--10-----10--------|--------10h12--12h14--12p10-------|
D-|--10--10h12--10h12--10-|-10h12----------------------------|
A-|-----------------------|----------------------------------|
E-|-----------------------|----------------------------------|

e-|-------------|-----------|-------------------------------||
B-|-------------|-----------|-------------------------------||
G-|-------------|-----------|-------------------------------||
D-|--12--10-----|-----------|------------12--12--12h14--12--||
A-|----------12-|-10h12--10-|-12--12/14---------------------||
E-|-------------|-----------|-------------------------------||
                                                            ^
                                       That represents a pause
                                                            
e-|-------------------------------|-----|--------------------|
B-|-------------------------------|-----|--------------------|
G-|------------14--14--14h16------|-----|--------------------|
D-|--14--14/16----------------15~-|-14~-|-10--10h12--10h12---|
A-|-------------------------------|-----|--------------------|
E-|-------------------------------|-----|--------------------|

                             (3:45)
e-|-----|-----|--------------------|------------------------||
B-|-----|-----|--------------------|------------------------||
G-|-----|-----|--------------------|------------------------||
D-|--10-|-5/7-|-5------------------|------------------------||
A-|-----|-----|----7--5------------|---------5--5h7--5h7--5-||
E-|-----|-----|----------7---5---3-|-5--5/7-----------------||

e-|-------------------------------------|-----|--------------|
B-|-------------------------------------|-----|--------------|
G-|-------------------------------------|-----|-10-----10----|
D-|-------7h9--9b10b9--7-----7--9---10~-|-10~-|-10h12--10h12-|
A-|--7h9------------------9-------------|-----|--------------|
E-|-------------------------------------|-----|--------------|

e-|---------------------------------|-------|-----|---|-----||
B-|---------------------------------|-------|-----|---|-----||
G-|--10--------------10--10---10----|-------|-----|---|-----||
D-|--10h12--12b(13)--10--10---10h12-|-10----|-5---|---|-----||
A-|---------------------------------|-10h12-|-5h7-|-5-|-5---||
E-|---------------------------------|-------|-----|---|-----||

e-|--------------|------------------------------|------------|
B-|--------------|------------------------------|------------|
G-|--------------|------------------------------|------------|
D-|--------------|------------------------------|------------|
A-|--5\3--3\2--0-|-0h2--0h2--2b(3)-2--0--2------|--5h7-------|
E-|--------------|--------------------------1---|------------|

e-|---------------------------------------------------------||
B-|---------------------------------------------------------||
G-|--------10-----10---------10--10-----------10------------||
D-|-10-----10h12--10h12b(13)-10--10----10h12------12~-------||
A-|-10h12---------------------------------------------------||
E-|---------------------------------------------------------||

Sorry for not correcting the whole solo, but anyway...
I'm pretty sure this is the best start of this solo that is on that site ;D

Have fun playing it,
bg-payne